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Finding the Fourth Proportional to 228,881, 315,859.60 and 126,910.74

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Solution

The fourth proportional to 228,881, 315,859.60 and 126,910.74 is: 175,138.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,881 : 315,859.60 = 126,910.74 : x
  2. Step 2: Convert to fraction form
    228,881/315,859.60 = 126,910.74/x
  3. Step 3: Cross multiply
    228,881x = 315,859.60 × 126,910.74
  4. Step 4: Simplify right side
    228,881x = 40,085,975,572.10
  5. Step 5: Solve for x
    x = 40,085,975,572.10/228,881
  6. Step 6: Final answer
    x = 175,138.94

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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.