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Finding the Fourth Proportional to 221,756.32, 332,686.72 and 71,985.04

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Solution

The fourth proportional to 221,756.32, 332,686.72 and 71,985.04 is: 107,994.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,756.32 : 332,686.72 = 71,985.04 : x
  2. Step 2: Convert to fraction form
    221,756.32/332,686.72 = 71,985.04/x
  3. Step 3: Cross multiply
    221,756.32x = 332,686.72 × 71,985.04
  4. Step 4: Simplify right side
    221,756.32x = 23,948,466,846.67
  5. Step 5: Solve for x
    x = 23,948,466,846.67/221,756.32
  6. Step 6: Final answer
    x = 107,994.52

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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.