Home / 280,076.28-386,538.48-159,235.80

Finding the Fourth Proportional to 280,076.28, 386,538.48 and 159,235.80

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Solution

The fourth proportional to 280,076.28, 386,538.48 and 159,235.80 is: 219,764.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,076.28 : 386,538.48 = 159,235.80 : x
  2. Step 2: Convert to fraction form
    280,076.28/386,538.48 = 159,235.80/x
  3. Step 3: Cross multiply
    280,076.28x = 386,538.48 × 159,235.80
  4. Step 4: Simplify right side
    280,076.28x = 61,550,764,093.58
  5. Step 5: Solve for x
    x = 61,550,764,093.58/280,076.28
  6. Step 6: Final answer
    x = 219,764.29

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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.