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Finding the Fourth Proportional to 315,170.85, 434,956.35 and 179,217.46

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Solution

The fourth proportional to 315,170.85, 434,956.35 and 179,217.46 is: 247,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,170.85 : 434,956.35 = 179,217.46 : x
  2. Step 2: Convert to fraction form
    315,170.85/434,956.35 = 179,217.46/x
  3. Step 3: Cross multiply
    315,170.85x = 434,956.35 × 179,217.46
  4. Step 4: Simplify right side
    315,170.85x = 77,951,772,257.87
  5. Step 5: Solve for x
    x = 77,951,772,257.87/315,170.85
  6. Step 6: Final answer
    x = 247,331.80

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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.