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Finding the Fourth Proportional to 348,545.85, 522,818.78 and 111,912.45

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Solution

The fourth proportional to 348,545.85, 522,818.78 and 111,912.45 is: 167,868.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,545.85 : 522,818.78 = 111,912.45 : x
  2. Step 2: Convert to fraction form
    348,545.85/522,818.78 = 111,912.45/x
  3. Step 3: Cross multiply
    348,545.85x = 522,818.78 × 111,912.45
  4. Step 4: Simplify right side
    348,545.85x = 58,509,930,016.25
  5. Step 5: Solve for x
    x = 58,509,930,016.25/348,545.85
  6. Step 6: Final answer
    x = 167,868.68

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.