Home / 397,217.28-548,162.42-215,930.78

Finding the Fourth Proportional to 397,217.28, 548,162.42 and 215,930.78

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Solution

The fourth proportional to 397,217.28, 548,162.42 and 215,930.78 is: 297,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,217.28 : 548,162.42 = 215,930.78 : x
  2. Step 2: Convert to fraction form
    397,217.28/548,162.42 = 215,930.78/x
  3. Step 3: Cross multiply
    397,217.28x = 548,162.42 × 215,930.78
  4. Step 4: Simplify right side
    397,217.28x = 118,365,136,176.48
  5. Step 5: Solve for x
    x = 118,365,136,176.48/397,217.28
  6. Step 6: Final answer
    x = 297,985.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.