Home / 397,638.20-548,724.29-216,350.85

Finding the Fourth Proportional to 397,638.20, 548,724.29 and 216,350.85

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Solution

The fourth proportional to 397,638.20, 548,724.29 and 216,350.85 is: 298,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,638.20 : 548,724.29 = 216,350.85 : x
  2. Step 2: Convert to fraction form
    397,638.20/548,724.29 = 216,350.85/x
  3. Step 3: Cross multiply
    397,638.20x = 548,724.29 × 216,350.85
  4. Step 4: Simplify right side
    397,638.20x = 118,716,965,475.39
  5. Step 5: Solve for x
    x = 118,716,965,475.39/397,638.20
  6. Step 6: Final answer
    x = 298,555.24

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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.