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Finding the Fourth Proportional to 228,125.76, 342,264.96 and 128,481.12

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Solution

The fourth proportional to 228,125.76, 342,264.96 and 128,481.12 is: 192,764.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,125.76 : 342,264.96 = 128,481.12 : x
  2. Step 2: Convert to fraction form
    228,125.76/342,264.96 = 128,481.12/x
  3. Step 3: Cross multiply
    228,125.76x = 342,264.96 × 128,481.12
  4. Step 4: Simplify right side
    228,125.76x = 43,974,585,397.56
  5. Step 5: Solve for x
    x = 43,974,585,397.56/228,125.76
  6. Step 6: Final answer
    x = 192,764.66

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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.