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Finding the Fourth Proportional to 266,760.60, 399,266.10 and 207,274.20

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Solution

The fourth proportional to 266,760.60, 399,266.10 and 207,274.20 is: 310,231.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,760.60 : 399,266.10 = 207,274.20 : x
  2. Step 2: Convert to fraction form
    266,760.60/399,266.10 = 207,274.20/x
  3. Step 3: Cross multiply
    266,760.60x = 399,266.10 × 207,274.20
  4. Step 4: Simplify right side
    266,760.60x = 82,757,561,464.62
  5. Step 5: Solve for x
    x = 82,757,561,464.62/266,760.60
  6. Step 6: Final answer
    x = 310,231.58

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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.