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Finding the Fourth Proportional to 266,817.60, 399,351.60 and 207,331.20

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Solution

The fourth proportional to 266,817.60, 399,351.60 and 207,331.20 is: 310,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,817.60 : 399,351.60 = 207,331.20 : x
  2. Step 2: Convert to fraction form
    266,817.60/399,351.60 = 207,331.20/x
  3. Step 3: Cross multiply
    266,817.60x = 399,351.60 × 207,331.20
  4. Step 4: Simplify right side
    266,817.60x = 82,798,046,449.92
  5. Step 5: Solve for x
    x = 82,798,046,449.92/266,817.60
  6. Step 6: Final answer
    x = 310,317.03

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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.