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Finding the Fourth Proportional to 498,062.26, 687,345.15 and 283,221.82

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Solution

The fourth proportional to 498,062.26, 687,345.15 and 283,221.82 is: 390,857.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,062.26 : 687,345.15 = 283,221.82 : x
  2. Step 2: Convert to fraction form
    498,062.26/687,345.15 = 283,221.82/x
  3. Step 3: Cross multiply
    498,062.26x = 687,345.15 × 283,221.82
  4. Step 4: Simplify right side
    498,062.26x = 194,671,144,351.17
  5. Step 5: Solve for x
    x = 194,671,144,351.17/498,062.26
  6. Step 6: Final answer
    x = 390,857.05

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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.