Home / 420,391.03-580,151.88-229,416.73

Finding the Fourth Proportional to 420,391.03, 580,151.88 and 229,416.73

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Solution

The fourth proportional to 420,391.03, 580,151.88 and 229,416.73 is: 316,601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,391.03 : 580,151.88 = 229,416.73 : x
  2. Step 2: Convert to fraction form
    420,391.03/580,151.88 = 229,416.73/x
  3. Step 3: Cross multiply
    420,391.03x = 580,151.88 × 229,416.73
  4. Step 4: Simplify right side
    420,391.03x = 133,096,547,212.95
  5. Step 5: Solve for x
    x = 133,096,547,212.95/420,391.03
  6. Step 6: Final answer
    x = 316,601.78

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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.