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Finding the Fourth Proportional to 270,666.20, 405,999.30 and 83,696.60

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Solution

The fourth proportional to 270,666.20, 405,999.30 and 83,696.60 is: 125,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,666.20 : 405,999.30 = 83,696.60 : x
  2. Step 2: Convert to fraction form
    270,666.20/405,999.30 = 83,696.60/x
  3. Step 3: Cross multiply
    270,666.20x = 405,999.30 × 83,696.60
  4. Step 4: Simplify right side
    270,666.20x = 33,980,761,012.38
  5. Step 5: Solve for x
    x = 33,980,761,012.38/270,666.20
  6. Step 6: Final answer
    x = 125,544.90

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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.