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Finding the Fourth Proportional to 498,418.20, 747,800.10 and 218,136.60

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Solution

The fourth proportional to 498,418.20, 747,800.10 and 218,136.60 is: 327,280.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,418.20 : 747,800.10 = 218,136.60 : x
  2. Step 2: Convert to fraction form
    498,418.20/747,800.10 = 218,136.60/x
  3. Step 3: Cross multiply
    498,418.20x = 747,800.10 × 218,136.60
  4. Step 4: Simplify right side
    498,418.20x = 163,122,571,293.66
  5. Step 5: Solve for x
    x = 163,122,571,293.66/498,418.20
  6. Step 6: Final answer
    x = 327,280.53

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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.