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Finding the Fourth Proportional to 228,621.57, 315,493.78 and 126,644.89

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Solution

The fourth proportional to 228,621.57, 315,493.78 and 126,644.89 is: 174,767.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,621.57 : 315,493.78 = 126,644.89 : x
  2. Step 2: Convert to fraction form
    228,621.57/315,493.78 = 126,644.89/x
  3. Step 3: Cross multiply
    228,621.57x = 315,493.78 × 126,644.89
  4. Step 4: Simplify right side
    228,621.57x = 39,955,675,063.78
  5. Step 5: Solve for x
    x = 39,955,675,063.78/228,621.57
  6. Step 6: Final answer
    x = 174,767.74

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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.