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Finding the Fourth Proportional to 220,838.57, 331,188.12 and 71,045.48

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Solution

The fourth proportional to 220,838.57, 331,188.12 and 71,045.48 is: 106,545.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,838.57 : 331,188.12 = 71,045.48 : x
  2. Step 2: Convert to fraction form
    220,838.57/331,188.12 = 71,045.48/x
  3. Step 3: Cross multiply
    220,838.57x = 331,188.12 × 71,045.48
  4. Step 4: Simplify right side
    220,838.57x = 23,529,418,955.70
  5. Step 5: Solve for x
    x = 23,529,418,955.70/220,838.57
  6. Step 6: Final answer
    x = 106,545.79

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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.