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Finding the Fourth Proportional to 330,251.72, 495,221.40 and 127,942.56

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Solution

The fourth proportional to 330,251.72, 495,221.40 and 127,942.56 is: 191,853.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,251.72 : 495,221.40 = 127,942.56 : x
  2. Step 2: Convert to fraction form
    330,251.72/495,221.40 = 127,942.56/x
  3. Step 3: Cross multiply
    330,251.72x = 495,221.40 × 127,942.56
  4. Step 4: Simplify right side
    330,251.72x = 63,359,893,682.78
  5. Step 5: Solve for x
    x = 63,359,893,682.78/330,251.72
  6. Step 6: Final answer
    x = 191,853.34

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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.