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Finding the Fourth Proportional to 865,159.60, 1,297,863.60 and 266,171.08

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Solution

The fourth proportional to 865,159.60, 1,297,863.60 and 266,171.08 is: 399,294.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,159.60 : 1,297,863.60 = 266,171.08 : x
  2. Step 2: Convert to fraction form
    865,159.60/1,297,863.60 = 266,171.08/x
  3. Step 3: Cross multiply
    865,159.60x = 1,297,863.60 × 266,171.08
  4. Step 4: Simplify right side
    865,159.60x = 345,453,756,104.69
  5. Step 5: Solve for x
    x = 345,453,756,104.69/865,159.60
  6. Step 6: Final answer
    x = 399,294.83

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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.