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Finding the Fourth Proportional to 508,076.31, 762,114.81 and 129,025.47

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Solution

The fourth proportional to 508,076.31, 762,114.81 and 129,025.47 is: 193,538.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,076.31 : 762,114.81 = 129,025.47 : x
  2. Step 2: Convert to fraction form
    508,076.31/762,114.81 = 129,025.47/x
  3. Step 3: Cross multiply
    508,076.31x = 762,114.81 × 129,025.47
  4. Step 4: Simplify right side
    508,076.31x = 98,332,221,554.21
  5. Step 5: Solve for x
    x = 98,332,221,554.21/508,076.31
  6. Step 6: Final answer
    x = 193,538.29

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Double scale
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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.