Home / 280,583.28-387,189-159,753.96

Finding the Fourth Proportional to 280,583.28, 387,189 and 159,753.96

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Solution

The fourth proportional to 280,583.28, 387,189 and 159,753.96 is: 220,451.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,583.28 : 387,189 = 159,753.96 : x
  2. Step 2: Convert to fraction form
    280,583.28/387,189 = 159,753.96/x
  3. Step 3: Cross multiply
    280,583.28x = 387,189 × 159,753.96
  4. Step 4: Simplify right side
    280,583.28x = 61,854,976,018.44
  5. Step 5: Solve for x
    x = 61,854,976,018.44/280,583.28
  6. Step 6: Final answer
    x = 220,451.40

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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.