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Finding the Fourth Proportional to 259,715.70, 389,573.55 and 228,611.70

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Solution

The fourth proportional to 259,715.70, 389,573.55 and 228,611.70 is: 342,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,715.70 : 389,573.55 = 228,611.70 : x
  2. Step 2: Convert to fraction form
    259,715.70/389,573.55 = 228,611.70/x
  3. Step 3: Cross multiply
    259,715.70x = 389,573.55 × 228,611.70
  4. Step 4: Simplify right side
    259,715.70x = 89,061,071,540.54
  5. Step 5: Solve for x
    x = 89,061,071,540.54/259,715.70
  6. Step 6: Final answer
    x = 342,917.55

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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.