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Finding the Fourth Proportional to 498,351.15, 687,790.31 and 283,449.71

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Solution

The fourth proportional to 498,351.15, 687,790.31 and 283,449.71 is: 391,197.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,351.15 : 687,790.31 = 283,449.71 : x
  2. Step 2: Convert to fraction form
    498,351.15/687,790.31 = 283,449.71/x
  3. Step 3: Cross multiply
    498,351.15x = 687,790.31 × 283,449.71
  4. Step 4: Simplify right side
    498,351.15x = 194,953,964,212.54
  5. Step 5: Solve for x
    x = 194,953,964,212.54/498,351.15
  6. Step 6: Final answer
    x = 391,197.98

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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.