Home / 331,667.28-457,237.10-280,474.38

Finding the Fourth Proportional to 331,667.28, 457,237.10 and 280,474.38

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Solution

The fourth proportional to 331,667.28, 457,237.10 and 280,474.38 is: 386,662.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,667.28 : 457,237.10 = 280,474.38 : x
  2. Step 2: Convert to fraction form
    331,667.28/457,237.10 = 280,474.38/x
  3. Step 3: Cross multiply
    331,667.28x = 457,237.10 × 280,474.38
  4. Step 4: Simplify right side
    331,667.28x = 128,243,292,135.50
  5. Step 5: Solve for x
    x = 128,243,292,135.50/331,667.28
  6. Step 6: Final answer
    x = 386,662.48

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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.