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Finding the Fourth Proportional to 288,928.56, 398,713.74 and 159,863.66

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Solution

The fourth proportional to 288,928.56, 398,713.74 and 159,863.66 is: 220,607.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,928.56 : 398,713.74 = 159,863.66 : x
  2. Step 2: Convert to fraction form
    288,928.56/398,713.74 = 159,863.66/x
  3. Step 3: Cross multiply
    288,928.56x = 398,713.74 × 159,863.66
  4. Step 4: Simplify right side
    288,928.56x = 63,739,838,240.48
  5. Step 5: Solve for x
    x = 63,739,838,240.48/288,928.56
  6. Step 6: Final answer
    x = 220,607.61

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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.