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Finding the Fourth Proportional to 250,718.46, 375,724.08 and 138,449.22

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Solution

The fourth proportional to 250,718.46, 375,724.08 and 138,449.22 is: 207,478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,718.46 : 375,724.08 = 138,449.22 : x
  2. Step 2: Convert to fraction form
    250,718.46/375,724.08 = 138,449.22/x
  3. Step 3: Cross multiply
    250,718.46x = 375,724.08 × 138,449.22
  4. Step 4: Simplify right side
    250,718.46x = 52,018,705,811.22
  5. Step 5: Solve for x
    x = 52,018,705,811.22/250,718.46
  6. Step 6: Final answer
    x = 207,478.56

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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.