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Finding the Fourth Proportional to 424,397.88, 636,587.59 and 199,633.74

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Solution

The fourth proportional to 424,397.88, 636,587.59 and 199,633.74 is: 299,446.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,397.88 : 636,587.59 = 199,633.74 : x
  2. Step 2: Convert to fraction form
    424,397.88/636,587.59 = 199,633.74/x
  3. Step 3: Cross multiply
    424,397.88x = 636,587.59 × 199,633.74
  4. Step 4: Simplify right side
    424,397.88x = 127,084,361,429.29
  5. Step 5: Solve for x
    x = 127,084,361,429.29/424,397.88
  6. Step 6: Final answer
    x = 299,446.27

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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.