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Finding the Fourth Proportional to 266,780.64, 400,129.20 and 89,286.24

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Solution

The fourth proportional to 266,780.64, 400,129.20 and 89,286.24 is: 133,915.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,780.64 : 400,129.20 = 89,286.24 : x
  2. Step 2: Convert to fraction form
    266,780.64/400,129.20 = 89,286.24/x
  3. Step 3: Cross multiply
    266,780.64x = 400,129.20 × 89,286.24
  4. Step 4: Simplify right side
    266,780.64x = 35,726,031,782.21
  5. Step 5: Solve for x
    x = 35,726,031,782.21/266,780.64
  6. Step 6: Final answer
    x = 133,915.38

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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.