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Finding the Fourth Proportional to 423,672.77, 635,315.13 and 252,971.97

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Solution

The fourth proportional to 423,672.77, 635,315.13 and 252,971.97 is: 379,342.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,672.77 : 635,315.13 = 252,971.97 : x
  2. Step 2: Convert to fraction form
    423,672.77/635,315.13 = 252,971.97/x
  3. Step 3: Cross multiply
    423,672.77x = 635,315.13 × 252,971.97
  4. Step 4: Simplify right side
    423,672.77x = 160,716,920,006.91
  5. Step 5: Solve for x
    x = 160,716,920,006.91/423,672.77
  6. Step 6: Final answer
    x = 379,342.11

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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.