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Finding the Fourth Proportional to 228,829.88, 315,756 and 126,854.39

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Solution

The fourth proportional to 228,829.88, 315,756 and 126,854.39 is: 175,042.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,829.88 : 315,756 = 126,854.39 : x
  2. Step 2: Convert to fraction form
    228,829.88/315,756 = 126,854.39/x
  3. Step 3: Cross multiply
    228,829.88x = 315,756 × 126,854.39
  4. Step 4: Simplify right side
    228,829.88x = 40,055,033,190.06
  5. Step 5: Solve for x
    x = 40,055,033,190.06/228,829.88
  6. Step 6: Final answer
    x = 175,042.85

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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.