Home / 420,849.32-580,775.06-229,862.66

Finding the Fourth Proportional to 420,849.32, 580,775.06 and 229,862.66

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Solution

The fourth proportional to 420,849.32, 580,775.06 and 229,862.66 is: 317,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,849.32 : 580,775.06 = 229,862.66 : x
  2. Step 2: Convert to fraction form
    420,849.32/580,775.06 = 229,862.66/x
  3. Step 3: Cross multiply
    420,849.32x = 580,775.06 × 229,862.66
  4. Step 4: Simplify right side
    420,849.32x = 133,498,497,824.04
  5. Step 5: Solve for x
    x = 133,498,497,824.04/420,849.32
  6. Step 6: Final answer
    x = 317,212.11

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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.