Home / 509,102.20-763,458.90-153,998.20

Finding the Fourth Proportional to 509,102.20, 763,458.90 and 153,998.20

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Solution

The fourth proportional to 509,102.20, 763,458.90 and 153,998.20 is: 230,938.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,102.20 : 763,458.90 = 153,998.20 : x
  2. Step 2: Convert to fraction form
    509,102.20/763,458.90 = 153,998.20/x
  3. Step 3: Cross multiply
    509,102.20x = 763,458.90 × 153,998.20
  4. Step 4: Simplify right side
    509,102.20x = 117,571,296,373.98
  5. Step 5: Solve for x
    x = 117,571,296,373.98/509,102.20
  6. Step 6: Final answer
    x = 230,938.50

Related Problems

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Half scale
Find fourth proportional to 1,018,204.40, 1,526,917.80 and 307,996.40
Double scale
Find fourth proportional to 509,103.20, 763,460.40 and 153,999.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.