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Finding the Fourth Proportional to 418,732.91, 577,944.42 and 255,425.52

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Solution

The fourth proportional to 418,732.91, 577,944.42 and 255,425.52 is: 352,543.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,732.91 : 577,944.42 = 255,425.52 : x
  2. Step 2: Convert to fraction form
    418,732.91/577,944.42 = 255,425.52/x
  3. Step 3: Cross multiply
    418,732.91x = 577,944.42 × 255,425.52
  4. Step 4: Simplify right side
    418,732.91x = 147,621,751,968.11
  5. Step 5: Solve for x
    x = 147,621,751,968.11/418,732.91
  6. Step 6: Final answer
    x = 352,543.95

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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.