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Finding the Fourth Proportional to 375,969.72, 563,990.28 and 136,144.20

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Solution

The fourth proportional to 375,969.72, 563,990.28 and 136,144.20 is: 204,229.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,969.72 : 563,990.28 = 136,144.20 : x
  2. Step 2: Convert to fraction form
    375,969.72/563,990.28 = 136,144.20/x
  3. Step 3: Cross multiply
    375,969.72x = 563,990.28 × 136,144.20
  4. Step 4: Simplify right side
    375,969.72x = 76,784,005,478.38
  5. Step 5: Solve for x
    x = 76,784,005,478.38/375,969.72
  6. Step 6: Final answer
    x = 204,229.23

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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.