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Finding the Fourth Proportional to 375,627.16, 563,047.08 and 138,818.80

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Solution

The fourth proportional to 375,627.16, 563,047.08 and 138,818.80 is: 208,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,627.16 : 563,047.08 = 138,818.80 : x
  2. Step 2: Convert to fraction form
    375,627.16/563,047.08 = 138,818.80/x
  3. Step 3: Cross multiply
    375,627.16x = 563,047.08 × 138,818.80
  4. Step 4: Simplify right side
    375,627.16x = 78,161,519,989.10
  5. Step 5: Solve for x
    x = 78,161,519,989.10/375,627.16
  6. Step 6: Final answer
    x = 208,082.72

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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.