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Finding the Fourth Proportional to 221,443.70, 332,214.15 and 71,690.90

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Solution

The fourth proportional to 221,443.70, 332,214.15 and 71,690.90 is: 107,552.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,443.70 : 332,214.15 = 71,690.90 : x
  2. Step 2: Convert to fraction form
    221,443.70/332,214.15 = 71,690.90/x
  3. Step 3: Cross multiply
    221,443.70x = 332,214.15 × 71,690.90
  4. Step 4: Simplify right side
    221,443.70x = 23,816,731,406.24
  5. Step 5: Solve for x
    x = 23,816,731,406.24/221,443.70
  6. Step 6: Final answer
    x = 107,552.08

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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.