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Finding the Fourth Proportional to 424,403.54, 636,605.51 and 108,860.55

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Solution

The fourth proportional to 424,403.54, 636,605.51 and 108,860.55 is: 163,290.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,403.54 : 636,605.51 = 108,860.55 : x
  2. Step 2: Convert to fraction form
    424,403.54/636,605.51 = 108,860.55/x
  3. Step 3: Cross multiply
    424,403.54x = 636,605.51 × 108,860.55
  4. Step 4: Simplify right side
    424,403.54x = 69,301,225,951.63
  5. Step 5: Solve for x
    x = 69,301,225,951.63/424,403.54
  6. Step 6: Final answer
    x = 163,290.88

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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.