Home / 331,665.28-457,234.34-280,472.38

Finding the Fourth Proportional to 331,665.28, 457,234.34 and 280,472.38

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Solution

The fourth proportional to 331,665.28, 457,234.34 and 280,472.38 is: 386,659.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,665.28 : 457,234.34 = 280,472.38 : x
  2. Step 2: Convert to fraction form
    331,665.28/457,234.34 = 280,472.38/x
  3. Step 3: Cross multiply
    331,665.28x = 457,234.34 × 280,472.38
  4. Step 4: Simplify right side
    331,665.28x = 128,241,603,557.53
  5. Step 5: Solve for x
    x = 128,241,603,557.53/331,665.28
  6. Step 6: Final answer
    x = 386,659.72

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1.5x scale

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.