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Finding the Fourth Proportional to 243,915.70, 365,879.97 and 66,426.34

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Solution

The fourth proportional to 243,915.70, 365,879.97 and 66,426.34 is: 99,641.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,915.70 : 365,879.97 = 66,426.34 : x
  2. Step 2: Convert to fraction form
    243,915.70/365,879.97 = 66,426.34/x
  3. Step 3: Cross multiply
    243,915.70x = 365,879.97 × 66,426.34
  4. Step 4: Simplify right side
    243,915.70x = 24,304,067,286.41
  5. Step 5: Solve for x
    x = 24,304,067,286.41/243,915.70
  6. Step 6: Final answer
    x = 99,641.26

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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.