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Finding the Fourth Proportional to 453,154.48, 679,732.80 and 137,613.76

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Solution

The fourth proportional to 453,154.48, 679,732.80 and 137,613.76 is: 206,420.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,154.48 : 679,732.80 = 137,613.76 : x
  2. Step 2: Convert to fraction form
    453,154.48/679,732.80 = 137,613.76/x
  3. Step 3: Cross multiply
    453,154.48x = 679,732.80 × 137,613.76
  4. Step 4: Simplify right side
    453,154.48x = 93,540,586,403.33
  5. Step 5: Solve for x
    x = 93,540,586,403.33/453,154.48
  6. Step 6: Final answer
    x = 206,420.97

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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.