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Finding the Fourth Proportional to 418,385.17, 577,375.05 and 227,398.51

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Solution

The fourth proportional to 418,385.17, 577,375.05 and 227,398.51 is: 313,811.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,385.17 : 577,375.05 = 227,398.51 : x
  2. Step 2: Convert to fraction form
    418,385.17/577,375.05 = 227,398.51/x
  3. Step 3: Cross multiply
    418,385.17x = 577,375.05 × 227,398.51
  4. Step 4: Simplify right side
    418,385.17x = 131,294,226,081.18
  5. Step 5: Solve for x
    x = 131,294,226,081.18/418,385.17
  6. Step 6: Final answer
    x = 313,811.85

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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.