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Finding the Fourth Proportional to 418,650, 577,789.32 and 239,802

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Solution

The fourth proportional to 418,650, 577,789.32 and 239,802 is: 330,956.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,650 : 577,789.32 = 239,802 : x
  2. Step 2: Convert to fraction form
    418,650/577,789.32 = 239,802/x
  3. Step 3: Cross multiply
    418,650x = 577,789.32 × 239,802
  4. Step 4: Simplify right side
    418,650x = 138,555,034,514.64
  5. Step 5: Solve for x
    x = 138,555,034,514.64/418,650
  6. Step 6: Final answer
    x = 330,956.73

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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.