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Finding the Fourth Proportional to 423,566.78, 635,209.22 and 170,781.98

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Solution

The fourth proportional to 423,566.78, 635,209.22 and 170,781.98 is: 256,116.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,566.78 : 635,209.22 = 170,781.98 : x
  2. Step 2: Convert to fraction form
    423,566.78/635,209.22 = 170,781.98/x
  3. Step 3: Cross multiply
    423,566.78x = 635,209.22 × 170,781.98
  4. Step 4: Simplify right side
    423,566.78x = 108,482,288,305.86
  5. Step 5: Solve for x
    x = 108,482,288,305.86/423,566.78
  6. Step 6: Final answer
    x = 256,116.14

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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.