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Finding the Fourth Proportional to 228,805.97, 315,746.64 and 126,829.56

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Solution

The fourth proportional to 228,805.97, 315,746.64 and 126,829.56 is: 175,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,805.97 : 315,746.64 = 126,829.56 : x
  2. Step 2: Convert to fraction form
    228,805.97/315,746.64 = 126,829.56/x
  3. Step 3: Cross multiply
    228,805.97x = 315,746.64 × 126,829.56
  4. Step 4: Simplify right side
    228,805.97x = 40,046,008,606.73
  5. Step 5: Solve for x
    x = 40,046,008,606.73/228,805.97
  6. Step 6: Final answer
    x = 175,021.70

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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.