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Finding the Fourth Proportional to 275,611.56, 380,278.98 and 156,379.56

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Solution

The fourth proportional to 275,611.56, 380,278.98 and 156,379.56 is: 215,766.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,611.56 : 380,278.98 = 156,379.56 : x
  2. Step 2: Convert to fraction form
    275,611.56/380,278.98 = 156,379.56/x
  3. Step 3: Cross multiply
    275,611.56x = 380,278.98 × 156,379.56
  4. Step 4: Simplify right side
    275,611.56x = 59,467,859,569.65
  5. Step 5: Solve for x
    x = 59,467,859,569.65/275,611.56
  6. Step 6: Final answer
    x = 215,766.93

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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.