Home / 420,781.60-580,683.23-229,800.61

Finding the Fourth Proportional to 420,781.60, 580,683.23 and 229,800.61

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Solution

The fourth proportional to 420,781.60, 580,683.23 and 229,800.61 is: 317,127.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,781.60 : 580,683.23 = 229,800.61 : x
  2. Step 2: Convert to fraction form
    420,781.60/580,683.23 = 229,800.61/x
  3. Step 3: Cross multiply
    420,781.60x = 580,683.23 × 229,800.61
  4. Step 4: Simplify right side
    420,781.60x = 133,441,360,470.77
  5. Step 5: Solve for x
    x = 133,441,360,470.77/420,781.60
  6. Step 6: Final answer
    x = 317,127.37

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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.