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Finding the Fourth Proportional to 527,661.72, 791,481.48 and 128,304.54

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Solution

The fourth proportional to 527,661.72, 791,481.48 and 128,304.54 is: 192,454.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,661.72 : 791,481.48 = 128,304.54 : x
  2. Step 2: Convert to fraction form
    527,661.72/791,481.48 = 128,304.54/x
  3. Step 3: Cross multiply
    527,661.72x = 791,481.48 × 128,304.54
  4. Step 4: Simplify right side
    527,661.72x = 101,550,667,209.92
  5. Step 5: Solve for x
    x = 101,550,667,209.92/527,661.72
  6. Step 6: Final answer
    x = 192,454.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.