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Finding the Fourth Proportional to 320,999.70, 481,557.15 and 134,030.10

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Solution

The fourth proportional to 320,999.70, 481,557.15 and 134,030.10 is: 201,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,999.70 : 481,557.15 = 134,030.10 : x
  2. Step 2: Convert to fraction form
    320,999.70/481,557.15 = 134,030.10/x
  3. Step 3: Cross multiply
    320,999.70x = 481,557.15 × 134,030.10
  4. Step 4: Simplify right side
    320,999.70x = 64,543,152,970.22
  5. Step 5: Solve for x
    x = 64,543,152,970.22/320,999.70
  6. Step 6: Final answer
    x = 201,069.20

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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.