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Finding the Fourth Proportional to 453,138.48, 679,708.80 and 137,597.76

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Solution

The fourth proportional to 453,138.48, 679,708.80 and 137,597.76 is: 206,396.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,138.48 : 679,708.80 = 137,597.76 : x
  2. Step 2: Convert to fraction form
    453,138.48/679,708.80 = 137,597.76/x
  3. Step 3: Cross multiply
    453,138.48x = 679,708.80 × 137,597.76
  4. Step 4: Simplify right side
    453,138.48x = 93,526,408,332.29
  5. Step 5: Solve for x
    x = 93,526,408,332.29/453,138.48
  6. Step 6: Final answer
    x = 206,396.97

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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.