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Finding the Fourth Proportional to 417,755.87, 576,341.61 and 236,426.21

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Solution

The fourth proportional to 417,755.87, 576,341.61 and 236,426.21 is: 326,176.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,755.87 : 576,341.61 = 236,426.21 : x
  2. Step 2: Convert to fraction form
    417,755.87/576,341.61 = 236,426.21/x
  3. Step 3: Cross multiply
    417,755.87x = 576,341.61 × 236,426.21
  4. Step 4: Simplify right side
    417,755.87x = 136,262,262,517.60
  5. Step 5: Solve for x
    x = 136,262,262,517.60/417,755.87
  6. Step 6: Final answer
    x = 326,176.78

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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.