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Finding the Fourth Proportional to 221,377.50, 305,500.95 and 131,953.50

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Solution

The fourth proportional to 221,377.50, 305,500.95 and 131,953.50 is: 182,095.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,377.50 : 305,500.95 = 131,953.50 : x
  2. Step 2: Convert to fraction form
    221,377.50/305,500.95 = 131,953.50/x
  3. Step 3: Cross multiply
    221,377.50x = 305,500.95 × 131,953.50
  4. Step 4: Simplify right side
    221,377.50x = 40,311,919,605.83
  5. Step 5: Solve for x
    x = 40,311,919,605.83/221,377.50
  6. Step 6: Final answer
    x = 182,095.83

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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.