Home / 331,084.55-457,035.32-280,359.83

Finding the Fourth Proportional to 331,084.55, 457,035.32 and 280,359.83

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Solution

The fourth proportional to 331,084.55, 457,035.32 and 280,359.83 is: 387,013.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,084.55 : 457,035.32 = 280,359.83 : x
  2. Step 2: Convert to fraction form
    331,084.55/457,035.32 = 280,359.83/x
  3. Step 3: Cross multiply
    331,084.55x = 457,035.32 × 280,359.83
  4. Step 4: Simplify right side
    331,084.55x = 128,134,346,462.68
  5. Step 5: Solve for x
    x = 128,134,346,462.68/331,084.55
  6. Step 6: Final answer
    x = 387,013.97

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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.