Home / 288,621.11-398,314.82-161,306.87

Finding the Fourth Proportional to 288,621.11, 398,314.82 and 161,306.87

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Solution

The fourth proportional to 288,621.11, 398,314.82 and 161,306.87 is: 222,613.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,621.11 : 398,314.82 = 161,306.87 : x
  2. Step 2: Convert to fraction form
    288,621.11/398,314.82 = 161,306.87/x
  3. Step 3: Cross multiply
    288,621.11x = 398,314.82 × 161,306.87
  4. Step 4: Simplify right side
    288,621.11x = 64,250,916,082.28
  5. Step 5: Solve for x
    x = 64,250,916,082.28/288,621.11
  6. Step 6: Final answer
    x = 222,613.36

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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.