Home / 288,520.28-398,269.10-258,252.20

Finding the Fourth Proportional to 288,520.28, 398,269.10 and 258,252.20

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Solution

The fourth proportional to 288,520.28, 398,269.10 and 258,252.20 is: 356,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,520.28 : 398,269.10 = 258,252.20 : x
  2. Step 2: Convert to fraction form
    288,520.28/398,269.10 = 258,252.20/x
  3. Step 3: Cross multiply
    288,520.28x = 398,269.10 × 258,252.20
  4. Step 4: Simplify right side
    288,520.28x = 102,853,871,414.81
  5. Step 5: Solve for x
    x = 102,853,871,414.81/288,520.28
  6. Step 6: Final answer
    x = 356,487.49

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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.