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Finding the Fourth Proportional to 266,026.90, 399,076.80 and 88,515.40

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Solution

The fourth proportional to 266,026.90, 399,076.80 and 88,515.40 is: 132,785.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,026.90 : 399,076.80 = 88,515.40 : x
  2. Step 2: Convert to fraction form
    266,026.90/399,076.80 = 88,515.40/x
  3. Step 3: Cross multiply
    266,026.90x = 399,076.80 × 88,515.40
  4. Step 4: Simplify right side
    266,026.90x = 35,324,442,582.72
  5. Step 5: Solve for x
    x = 35,324,442,582.72/266,026.90
  6. Step 6: Final answer
    x = 132,785.23

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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.