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Finding the Fourth Proportional to 266,687.40, 400,031.10 and 89,200.20

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Solution

The fourth proportional to 266,687.40, 400,031.10 and 89,200.20 is: 133,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,687.40 : 400,031.10 = 89,200.20 : x
  2. Step 2: Convert to fraction form
    266,687.40/400,031.10 = 89,200.20/x
  3. Step 3: Cross multiply
    266,687.40x = 400,031.10 × 89,200.20
  4. Step 4: Simplify right side
    266,687.40x = 35,682,854,126.22
  5. Step 5: Solve for x
    x = 35,682,854,126.22/266,687.40
  6. Step 6: Final answer
    x = 133,800.30

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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.