Home / 331,639.38-497,459.07-82,321.38

Finding the Fourth Proportional to 331,639.38, 497,459.07 and 82,321.38

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Solution

The fourth proportional to 331,639.38, 497,459.07 and 82,321.38 is: 123,482.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,639.38 : 497,459.07 = 82,321.38 : x
  2. Step 2: Convert to fraction form
    331,639.38/497,459.07 = 82,321.38/x
  3. Step 3: Cross multiply
    331,639.38x = 497,459.07 × 82,321.38
  4. Step 4: Simplify right side
    331,639.38x = 40,951,517,135.92
  5. Step 5: Solve for x
    x = 40,951,517,135.92/331,639.38
  6. Step 6: Final answer
    x = 123,482.07

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1.5x scale

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.