Home / 280,069.28-386,528.82-159,228.80

Finding the Fourth Proportional to 280,069.28, 386,528.82 and 159,228.80

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Solution

The fourth proportional to 280,069.28, 386,528.82 and 159,228.80 is: 219,754.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,069.28 : 386,528.82 = 159,228.80 : x
  2. Step 2: Convert to fraction form
    280,069.28/386,528.82 = 159,228.80/x
  3. Step 3: Cross multiply
    280,069.28x = 386,528.82 × 159,228.80
  4. Step 4: Simplify right side
    280,069.28x = 61,546,520,174.02
  5. Step 5: Solve for x
    x = 61,546,520,174.02/280,069.28
  6. Step 6: Final answer
    x = 219,754.63

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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.