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Finding the Fourth Proportional to 240,640.78, 360,839.67 and 140,830.96

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Solution

The fourth proportional to 240,640.78, 360,839.67 and 140,830.96 is: 211,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,640.78 : 360,839.67 = 140,830.96 : x
  2. Step 2: Convert to fraction form
    240,640.78/360,839.67 = 140,830.96/x
  3. Step 3: Cross multiply
    240,640.78x = 360,839.67 × 140,830.96
  4. Step 4: Simplify right side
    240,640.78x = 50,817,397,132.18
  5. Step 5: Solve for x
    x = 50,817,397,132.18/240,640.78
  6. Step 6: Final answer
    x = 211,175.33

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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.