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Finding the Fourth Proportional to 664,712.30, 996,874.05 and 238,198.70

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Solution

The fourth proportional to 664,712.30, 996,874.05 and 238,198.70 is: 357,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,712.30 : 996,874.05 = 238,198.70 : x
  2. Step 2: Convert to fraction form
    664,712.30/996,874.05 = 238,198.70/x
  3. Step 3: Cross multiply
    664,712.30x = 996,874.05 × 238,198.70
  4. Step 4: Simplify right side
    664,712.30x = 237,454,102,773.74
  5. Step 5: Solve for x
    x = 237,454,102,773.74/664,712.30
  6. Step 6: Final answer
    x = 357,228.39

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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.