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Finding the Fourth Proportional to 498,179.88, 687,503.40 and 283,350.88

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Solution

The fourth proportional to 498,179.88, 687,503.40 and 283,350.88 is: 391,032.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,179.88 : 687,503.40 = 283,350.88 : x
  2. Step 2: Convert to fraction form
    498,179.88/687,503.40 = 283,350.88/x
  3. Step 3: Cross multiply
    498,179.88x = 687,503.40 × 283,350.88
  4. Step 4: Simplify right side
    498,179.88x = 194,804,693,392.99
  5. Step 5: Solve for x
    x = 194,804,693,392.99/498,179.88
  6. Step 6: Final answer
    x = 391,032.84

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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.