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Finding the Fourth Proportional to 228,885.96, 315,872.70 and 126,904.92

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Solution

The fourth proportional to 228,885.96, 315,872.70 and 126,904.92 is: 175,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,885.96 : 315,872.70 = 126,904.92 : x
  2. Step 2: Convert to fraction form
    228,885.96/315,872.70 = 126,904.92/x
  3. Step 3: Cross multiply
    228,885.96x = 315,872.70 × 126,904.92
  4. Step 4: Simplify right side
    228,885.96x = 40,085,799,723.68
  5. Step 5: Solve for x
    x = 40,085,799,723.68/228,885.96
  6. Step 6: Final answer
    x = 175,134.38

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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.