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Finding the Fourth Proportional to 453,358.79, 680,013.57 and 137,791.09

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Solution

The fourth proportional to 453,358.79, 680,013.57 and 137,791.09 is: 206,679.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,358.79 : 680,013.57 = 137,791.09 : x
  2. Step 2: Convert to fraction form
    453,358.79/680,013.57 = 137,791.09/x
  3. Step 3: Cross multiply
    453,358.79x = 680,013.57 × 137,791.09
  4. Step 4: Simplify right side
    453,358.79x = 93,699,812,391.82
  5. Step 5: Solve for x
    x = 93,699,812,391.82/453,358.79
  6. Step 6: Final answer
    x = 206,679.16

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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.