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Finding the Fourth Proportional to 498,404.08, 687,798.48 and 272,049.76

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Solution

The fourth proportional to 498,404.08, 687,798.48 and 272,049.76 is: 375,429.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,404.08 : 687,798.48 = 272,049.76 : x
  2. Step 2: Convert to fraction form
    498,404.08/687,798.48 = 272,049.76/x
  3. Step 3: Cross multiply
    498,404.08x = 687,798.48 × 272,049.76
  4. Step 4: Simplify right side
    498,404.08x = 187,115,411,412.37
  5. Step 5: Solve for x
    x = 187,115,411,412.37/498,404.08
  6. Step 6: Final answer
    x = 375,429.13

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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.