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Finding the Fourth Proportional to 171,031.60, 256,255.80 and 141,288.40

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Solution

The fourth proportional to 171,031.60, 256,255.80 and 141,288.40 is: 211,691.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,031.60 : 256,255.80 = 141,288.40 : x
  2. Step 2: Convert to fraction form
    171,031.60/256,255.80 = 141,288.40/x
  3. Step 3: Cross multiply
    171,031.60x = 256,255.80 × 141,288.40
  4. Step 4: Simplify right side
    171,031.60x = 36,205,971,972.72
  5. Step 5: Solve for x
    x = 36,205,971,972.72/171,031.60
  6. Step 6: Final answer
    x = 211,691.71

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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.