Home / 420,845.40-580,766.65-229,859.24

Finding the Fourth Proportional to 420,845.40, 580,766.65 and 229,859.24

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Solution

The fourth proportional to 420,845.40, 580,766.65 and 229,859.24 is: 317,205.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,845.40 : 580,766.65 = 229,859.24 : x
  2. Step 2: Convert to fraction form
    420,845.40/580,766.65 = 229,859.24/x
  3. Step 3: Cross multiply
    420,845.40x = 580,766.65 × 229,859.24
  4. Step 4: Simplify right side
    420,845.40x = 133,494,581,663.62
  5. Step 5: Solve for x
    x = 133,494,581,663.62/420,845.40
  6. Step 6: Final answer
    x = 317,205.75

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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.