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Finding the Fourth Proportional to 250,715.45, 375,719.58 and 138,446.21

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Solution

The fourth proportional to 250,715.45, 375,719.58 and 138,446.21 is: 207,474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,715.45 : 375,719.58 = 138,446.21 : x
  2. Step 2: Convert to fraction form
    250,715.45/375,719.58 = 138,446.21/x
  3. Step 3: Cross multiply
    250,715.45x = 375,719.58 × 138,446.21
  4. Step 4: Simplify right side
    250,715.45x = 52,016,952,813.09
  5. Step 5: Solve for x
    x = 52,016,952,813.09/250,715.45
  6. Step 6: Final answer
    x = 207,474.06

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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.