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Finding the Fourth Proportional to 436,910.65, 655,389.33 and 137,414.58

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Solution

The fourth proportional to 436,910.65, 655,389.33 and 137,414.58 is: 206,129.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,910.65 : 655,389.33 = 137,414.58 : x
  2. Step 2: Convert to fraction form
    436,910.65/655,389.33 = 137,414.58/x
  3. Step 3: Cross multiply
    436,910.65x = 655,389.33 × 137,414.58
  4. Step 4: Simplify right side
    436,910.65x = 90,060,049,174.89
  5. Step 5: Solve for x
    x = 90,060,049,174.89/436,910.65
  6. Step 6: Final answer
    x = 206,129.22

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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.