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Finding the Fourth Proportional to 221,378.50, 332,100.15 and 71,569

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Solution

The fourth proportional to 221,378.50, 332,100.15 and 71,569 is: 107,363.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,378.50 : 332,100.15 = 71,569 : x
  2. Step 2: Convert to fraction form
    221,378.50/332,100.15 = 71,569/x
  3. Step 3: Cross multiply
    221,378.50x = 332,100.15 × 71,569
  4. Step 4: Simplify right side
    221,378.50x = 23,768,075,635.35
  5. Step 5: Solve for x
    x = 23,768,075,635.35/221,378.50
  6. Step 6: Final answer
    x = 107,363.97

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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.