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Finding the Fourth Proportional to 228,509.97, 315,343.56 and 126,535.42

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Solution

The fourth proportional to 228,509.97, 315,343.56 and 126,535.42 is: 174,618.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,509.97 : 315,343.56 = 126,535.42 : x
  2. Step 2: Convert to fraction form
    228,509.97/315,343.56 = 126,535.42/x
  3. Step 3: Cross multiply
    228,509.97x = 315,343.56 × 126,535.42
  4. Step 4: Simplify right side
    228,509.97x = 39,902,131,030.66
  5. Step 5: Solve for x
    x = 39,902,131,030.66/228,509.97
  6. Step 6: Final answer
    x = 174,618.78

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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.