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Finding the Fourth Proportional to 228,478.92, 315,300.87 and 127,876.92

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Solution

The fourth proportional to 228,478.92, 315,300.87 and 127,876.92 is: 176,470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,478.92 : 315,300.87 = 127,876.92 : x
  2. Step 2: Convert to fraction form
    228,478.92/315,300.87 = 127,876.92/x
  3. Step 3: Cross multiply
    228,478.92x = 315,300.87 × 127,876.92
  4. Step 4: Simplify right side
    228,478.92x = 40,319,704,128.92
  5. Step 5: Solve for x
    x = 40,319,704,128.92/228,478.92
  6. Step 6: Final answer
    x = 176,470.13

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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.