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Finding the Fourth Proportional to 393,562.72, 590,418.92 and 272,493.82

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Solution

The fourth proportional to 393,562.72, 590,418.92 and 272,493.82 is: 408,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,562.72 : 590,418.92 = 272,493.82 : x
  2. Step 2: Convert to fraction form
    393,562.72/590,418.92 = 272,493.82/x
  3. Step 3: Cross multiply
    393,562.72x = 590,418.92 × 272,493.82
  4. Step 4: Simplify right side
    393,562.72x = 160,885,508,330.33
  5. Step 5: Solve for x
    x = 160,885,508,330.33/393,562.72
  6. Step 6: Final answer
    x = 408,792.55

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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.