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Finding the Fourth Proportional to 266,072.40, 399,145.05 and 88,560.90

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Solution

The fourth proportional to 266,072.40, 399,145.05 and 88,560.90 is: 132,853.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,072.40 : 399,145.05 = 88,560.90 : x
  2. Step 2: Convert to fraction form
    266,072.40/399,145.05 = 88,560.90/x
  3. Step 3: Cross multiply
    266,072.40x = 399,145.05 × 88,560.90
  4. Step 4: Simplify right side
    266,072.40x = 35,348,644,858.55
  5. Step 5: Solve for x
    x = 35,348,644,858.55/266,072.40
  6. Step 6: Final answer
    x = 132,853.48

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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.