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Finding the Fourth Proportional to 424,857.85, 637,286.97 and 140,548.40

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Solution

The fourth proportional to 424,857.85, 637,286.97 and 140,548.40 is: 210,822.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,857.85 : 637,286.97 = 140,548.40 : x
  2. Step 2: Convert to fraction form
    424,857.85/637,286.97 = 140,548.40/x
  3. Step 3: Cross multiply
    424,857.85x = 637,286.97 × 140,548.40
  4. Step 4: Simplify right side
    424,857.85x = 89,569,663,704.80
  5. Step 5: Solve for x
    x = 89,569,663,704.80/424,857.85
  6. Step 6: Final answer
    x = 210,822.66

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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.