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Finding the Fourth Proportional to 228,311.73, 315,062.06 and 126,335.43

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Solution

The fourth proportional to 228,311.73, 315,062.06 and 126,335.43 is: 174,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,311.73 : 315,062.06 = 126,335.43 : x
  2. Step 2: Convert to fraction form
    228,311.73/315,062.06 = 126,335.43/x
  3. Step 3: Cross multiply
    228,311.73x = 315,062.06 × 126,335.43
  4. Step 4: Simplify right side
    228,311.73x = 39,803,500,195.11
  5. Step 5: Solve for x
    x = 39,803,500,195.11/228,311.73
  6. Step 6: Final answer
    x = 174,338.39

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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.