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Finding the Fourth Proportional to 228,320.96, 315,055.92 and 126,332.88

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Solution

The fourth proportional to 228,320.96, 315,055.92 and 126,332.88 is: 174,324.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,320.96 : 315,055.92 = 126,332.88 : x
  2. Step 2: Convert to fraction form
    228,320.96/315,055.92 = 126,332.88/x
  3. Step 3: Cross multiply
    228,320.96x = 315,055.92 × 126,332.88
  4. Step 4: Simplify right side
    228,320.96x = 39,801,921,734.65
  5. Step 5: Solve for x
    x = 39,801,921,734.65/228,320.96
  6. Step 6: Final answer
    x = 174,324.43

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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.