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Finding the Fourth Proportional to 498,475.72, 687,885.78 and 272,125

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Solution

The fourth proportional to 498,475.72, 687,885.78 and 272,125 is: 375,526.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,475.72 : 687,885.78 = 272,125 : x
  2. Step 2: Convert to fraction form
    498,475.72/687,885.78 = 272,125/x
  3. Step 3: Cross multiply
    498,475.72x = 687,885.78 × 272,125
  4. Step 4: Simplify right side
    498,475.72x = 187,190,917,882.50
  5. Step 5: Solve for x
    x = 187,190,917,882.50/498,475.72
  6. Step 6: Final answer
    x = 375,526.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.