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Finding the Fourth Proportional to 266,572.20, 399,080.70 and 238,578.60

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Solution

The fourth proportional to 266,572.20, 399,080.70 and 238,578.60 is: 357,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,572.20 : 399,080.70 = 238,578.60 : x
  2. Step 2: Convert to fraction form
    266,572.20/399,080.70 = 238,578.60/x
  3. Step 3: Cross multiply
    266,572.20x = 399,080.70 × 238,578.60
  4. Step 4: Simplify right side
    266,572.20x = 95,212,114,693.02
  5. Step 5: Solve for x
    x = 95,212,114,693.02/266,572.20
  6. Step 6: Final answer
    x = 357,171.96

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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.