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Finding the Fourth Proportional to 425,006.28, 637,356.36 and 140,644.35

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Solution

The fourth proportional to 425,006.28, 637,356.36 and 140,644.35 is: 210,915.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,006.28 : 637,356.36 = 140,644.35 : x
  2. Step 2: Convert to fraction form
    425,006.28/637,356.36 = 140,644.35/x
  3. Step 3: Cross multiply
    425,006.28x = 637,356.36 × 140,644.35
  4. Step 4: Simplify right side
    425,006.28x = 89,640,570,970.57
  5. Step 5: Solve for x
    x = 89,640,570,970.57/425,006.28
  6. Step 6: Final answer
    x = 210,915.87

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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.