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Finding the Fourth Proportional to 453,485.39, 680,329.23 and 137,966.90

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Solution

The fourth proportional to 453,485.39, 680,329.23 and 137,966.90 is: 206,981.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,485.39 : 680,329.23 = 137,966.90 : x
  2. Step 2: Convert to fraction form
    453,485.39/680,329.23 = 137,966.90/x
  3. Step 3: Cross multiply
    453,485.39x = 680,329.23 × 137,966.90
  4. Step 4: Simplify right side
    453,485.39x = 93,862,910,923.47
  5. Step 5: Solve for x
    x = 93,862,910,923.47/453,485.39
  6. Step 6: Final answer
    x = 206,981.12

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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.