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Finding the Fourth Proportional to 250,321.65, 345,452.69 and 137,144.49

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Solution

The fourth proportional to 250,321.65, 345,452.69 and 137,144.49 is: 189,264.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,321.65 : 345,452.69 = 137,144.49 : x
  2. Step 2: Convert to fraction form
    250,321.65/345,452.69 = 137,144.49/x
  3. Step 3: Cross multiply
    250,321.65x = 345,452.69 × 137,144.49
  4. Step 4: Simplify right side
    250,321.65x = 47,376,932,989.18
  5. Step 5: Solve for x
    x = 47,376,932,989.18/250,321.65
  6. Step 6: Final answer
    x = 189,264.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.