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Finding the Fourth Proportional to 398,145.96, 595,815.66 and 248,456.70

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Solution

The fourth proportional to 398,145.96, 595,815.66 and 248,456.70 is: 371,809.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,145.96 : 595,815.66 = 248,456.70 : x
  2. Step 2: Convert to fraction form
    398,145.96/595,815.66 = 248,456.70/x
  3. Step 3: Cross multiply
    398,145.96x = 595,815.66 × 248,456.70
  4. Step 4: Simplify right side
    398,145.96x = 148,034,392,691.92
  5. Step 5: Solve for x
    x = 148,034,392,691.92/398,145.96
  6. Step 6: Final answer
    x = 371,809.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.