Home / 397,123.20-548,109.70-235,947.20

Finding the Fourth Proportional to 397,123.20, 548,109.70 and 235,947.20

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Solution

The fourth proportional to 397,123.20, 548,109.70 and 235,947.20 is: 325,654.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,123.20 : 548,109.70 = 235,947.20 : x
  2. Step 2: Convert to fraction form
    397,123.20/548,109.70 = 235,947.20/x
  3. Step 3: Cross multiply
    397,123.20x = 548,109.70 × 235,947.20
  4. Step 4: Simplify right side
    397,123.20x = 129,324,949,007.84
  5. Step 5: Solve for x
    x = 129,324,949,007.84/397,123.20
  6. Step 6: Final answer
    x = 325,654.48

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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.