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Finding the Fourth Proportional to 221,722.64, 332,695.16 and 103,403.28

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Solution

The fourth proportional to 221,722.64, 332,695.16 and 103,403.28 is: 155,156.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,722.64 : 332,695.16 = 103,403.28 : x
  2. Step 2: Convert to fraction form
    221,722.64/332,695.16 = 103,403.28/x
  3. Step 3: Cross multiply
    221,722.64x = 332,695.16 × 103,403.28
  4. Step 4: Simplify right side
    221,722.64x = 34,401,770,784.12
  5. Step 5: Solve for x
    x = 34,401,770,784.12/221,722.64
  6. Step 6: Final answer
    x = 155,156.78

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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.