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Finding the Fourth Proportional to 228,940.96, 315,932.64 and 126,966.88

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Solution

The fourth proportional to 228,940.96, 315,932.64 and 126,966.88 is: 175,211.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,940.96 : 315,932.64 = 126,966.88 : x
  2. Step 2: Convert to fraction form
    228,940.96/315,932.64 = 126,966.88/x
  3. Step 3: Cross multiply
    228,940.96x = 315,932.64 × 126,966.88
  4. Step 4: Simplify right side
    228,940.96x = 40,112,981,590.96
  5. Step 5: Solve for x
    x = 40,112,981,590.96/228,940.96
  6. Step 6: Final answer
    x = 175,211.03

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1.5x scale

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.