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Finding the Fourth Proportional to 453,347.20, 680,020.80 and 137,763.10

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Solution

The fourth proportional to 453,347.20, 680,020.80 and 137,763.10 is: 206,644.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,347.20 : 680,020.80 = 137,763.10 : x
  2. Step 2: Convert to fraction form
    453,347.20/680,020.80 = 137,763.10/x
  3. Step 3: Cross multiply
    453,347.20x = 680,020.80 × 137,763.10
  4. Step 4: Simplify right side
    453,347.20x = 93,681,773,472.48
  5. Step 5: Solve for x
    x = 93,681,773,472.48/453,347.20
  6. Step 6: Final answer
    x = 206,644.65

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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.