Home / 420,914.18-580,874.29-229,939.87

Finding the Fourth Proportional to 420,914.18, 580,874.29 and 229,939.87

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Solution

The fourth proportional to 420,914.18, 580,874.29 and 229,939.87 is: 317,323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,914.18 : 580,874.29 = 229,939.87 : x
  2. Step 2: Convert to fraction form
    420,914.18/580,874.29 = 229,939.87/x
  3. Step 3: Cross multiply
    420,914.18x = 580,874.29 × 229,939.87
  4. Step 4: Simplify right side
    420,914.18x = 133,566,155,824.57
  5. Step 5: Solve for x
    x = 133,566,155,824.57/420,914.18
  6. Step 6: Final answer
    x = 317,323.97

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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.