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Finding the Fourth Proportional to 429,319.31, 644,001.71 and 129,792.24

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Solution

The fourth proportional to 429,319.31, 644,001.71 and 129,792.24 is: 194,695.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,319.31 : 644,001.71 = 129,792.24 : x
  2. Step 2: Convert to fraction form
    429,319.31/644,001.71 = 129,792.24/x
  3. Step 3: Cross multiply
    429,319.31x = 644,001.71 × 129,792.24
  4. Step 4: Simplify right side
    429,319.31x = 83,586,423,855.77
  5. Step 5: Solve for x
    x = 83,586,423,855.77/429,319.31
  6. Step 6: Final answer
    x = 194,695.24

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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.