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Finding the Fourth Proportional to 228,613, 315,476.20 and 126,638.04

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Solution

The fourth proportional to 228,613, 315,476.20 and 126,638.04 is: 174,755.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,613 : 315,476.20 = 126,638.04 : x
  2. Step 2: Convert to fraction form
    228,613/315,476.20 = 126,638.04/x
  3. Step 3: Cross multiply
    228,613x = 315,476.20 × 126,638.04
  4. Step 4: Simplify right side
    228,613x = 39,951,287,634.65
  5. Step 5: Solve for x
    x = 39,951,287,634.65/228,613
  6. Step 6: Final answer
    x = 174,755.10

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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.