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Finding the Fourth Proportional to 266,086.90, 399,166.80 and 88,575.40

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Solution

The fourth proportional to 266,086.90, 399,166.80 and 88,575.40 is: 132,875.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,086.90 : 399,166.80 = 88,575.40 : x
  2. Step 2: Convert to fraction form
    266,086.90/399,166.80 = 88,575.40/x
  3. Step 3: Cross multiply
    266,086.90x = 399,166.80 × 88,575.40
  4. Step 4: Simplify right side
    266,086.90x = 35,356,358,976.72
  5. Step 5: Solve for x
    x = 35,356,358,976.72/266,086.90
  6. Step 6: Final answer
    x = 132,875.23

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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.