Home / 397,721.58-548,867.31-216,445.20

Finding the Fourth Proportional to 397,721.58, 548,867.31 and 216,445.20

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Solution

The fourth proportional to 397,721.58, 548,867.31 and 216,445.20 is: 298,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,721.58 : 548,867.31 = 216,445.20 : x
  2. Step 2: Convert to fraction form
    397,721.58/548,867.31 = 216,445.20/x
  3. Step 3: Cross multiply
    397,721.58x = 548,867.31 × 216,445.20
  4. Step 4: Simplify right side
    397,721.58x = 118,799,691,816.49
  5. Step 5: Solve for x
    x = 118,799,691,816.49/397,721.58
  6. Step 6: Final answer
    x = 298,700.65

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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.