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Finding the Fourth Proportional to 266,425.47, 399,638.46 and 74,292.23

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Solution

The fourth proportional to 266,425.47, 399,638.46 and 74,292.23 is: 111,438.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,425.47 : 399,638.46 = 74,292.23 : x
  2. Step 2: Convert to fraction form
    266,425.47/399,638.46 = 74,292.23/x
  3. Step 3: Cross multiply
    266,425.47x = 399,638.46 × 74,292.23
  4. Step 4: Simplify right side
    266,425.47x = 29,690,030,388.97
  5. Step 5: Solve for x
    x = 29,690,030,388.97/266,425.47
  6. Step 6: Final answer
    x = 111,438.41

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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.