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Finding the Fourth Proportional to 288,540.06, 398,205.89 and 159,475.77

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Solution

The fourth proportional to 288,540.06, 398,205.89 and 159,475.77 is: 220,087.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,540.06 : 398,205.89 = 159,475.77 : x
  2. Step 2: Convert to fraction form
    288,540.06/398,205.89 = 159,475.77/x
  3. Step 3: Cross multiply
    288,540.06x = 398,205.89 × 159,475.77
  4. Step 4: Simplify right side
    288,540.06x = 63,504,190,128.91
  5. Step 5: Solve for x
    x = 63,504,190,128.91/288,540.06
  6. Step 6: Final answer
    x = 220,087.95

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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.