Home / 280,162.28-386,657.09-159,321.72

Finding the Fourth Proportional to 280,162.28, 386,657.09 and 159,321.72

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Solution

The fourth proportional to 280,162.28, 386,657.09 and 159,321.72 is: 219,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,162.28 : 386,657.09 = 159,321.72 : x
  2. Step 2: Convert to fraction form
    280,162.28/386,657.09 = 159,321.72/x
  3. Step 3: Cross multiply
    280,162.28x = 386,657.09 × 159,321.72
  4. Step 4: Simplify right side
    280,162.28x = 61,602,871,832.39
  5. Step 5: Solve for x
    x = 61,602,871,832.39/280,162.28
  6. Step 6: Final answer
    x = 219,882.82

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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.