Home / 213,904.24-320,929.28-80,822.88

Finding the Fourth Proportional to 213,904.24, 320,929.28 and 80,822.88

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Solution

The fourth proportional to 213,904.24, 320,929.28 and 80,822.88 is: 121,261.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,904.24 : 320,929.28 = 80,822.88 : x
  2. Step 2: Convert to fraction form
    213,904.24/320,929.28 = 80,822.88/x
  3. Step 3: Cross multiply
    213,904.24x = 320,929.28 × 80,822.88
  4. Step 4: Simplify right side
    213,904.24x = 25,938,428,685.93
  5. Step 5: Solve for x
    x = 25,938,428,685.93/213,904.24
  6. Step 6: Final answer
    x = 121,261.87

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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.