Home / 321,020.28-442,861.02-207,879.48

Finding the Fourth Proportional to 321,020.28, 442,861.02 and 207,879.48

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Solution

The fourth proportional to 321,020.28, 442,861.02 and 207,879.48 is: 286,778.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,020.28 : 442,861.02 = 207,879.48 : x
  2. Step 2: Convert to fraction form
    321,020.28/442,861.02 = 207,879.48/x
  3. Step 3: Cross multiply
    321,020.28x = 442,861.02 × 207,879.48
  4. Step 4: Simplify right side
    321,020.28x = 92,061,718,549.87
  5. Step 5: Solve for x
    x = 92,061,718,549.87/321,020.28
  6. Step 6: Final answer
    x = 286,778.51

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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.