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Finding the Fourth Proportional to 508,673.80, 763,132.20 and 153,691.30

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Solution

The fourth proportional to 508,673.80, 763,132.20 and 153,691.30 is: 230,573.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,673.80 : 763,132.20 = 153,691.30 : x
  2. Step 2: Convert to fraction form
    508,673.80/763,132.20 = 153,691.30/x
  3. Step 3: Cross multiply
    508,673.80x = 763,132.20 × 153,691.30
  4. Step 4: Simplify right side
    508,673.80x = 117,286,779,889.86
  5. Step 5: Solve for x
    x = 117,286,779,889.86/508,673.80
  6. Step 6: Final answer
    x = 230,573.66

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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.