Home / 288,928.87-398,712.19-159,867.58

Finding the Fourth Proportional to 288,928.87, 398,712.19 and 159,867.58

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Solution

The fourth proportional to 288,928.87, 398,712.19 and 159,867.58 is: 220,611.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,928.87 : 398,712.19 = 159,867.58 : x
  2. Step 2: Convert to fraction form
    288,928.87/398,712.19 = 159,867.58/x
  3. Step 3: Cross multiply
    288,928.87x = 398,712.19 × 159,867.58
  4. Step 4: Simplify right side
    288,928.87x = 63,741,152,931.80
  5. Step 5: Solve for x
    x = 63,741,152,931.80/288,928.87
  6. Step 6: Final answer
    x = 220,611.92

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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.