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Finding the Fourth Proportional to 221,472.29, 305,525.46 and 144,957.70

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Solution

The fourth proportional to 221,472.29, 305,525.46 and 144,957.70 is: 199,972.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,472.29 : 305,525.46 = 144,957.70 : x
  2. Step 2: Convert to fraction form
    221,472.29/305,525.46 = 144,957.70/x
  3. Step 3: Cross multiply
    221,472.29x = 305,525.46 × 144,957.70
  4. Step 4: Simplify right side
    221,472.29x = 44,288,265,720.63
  5. Step 5: Solve for x
    x = 44,288,265,720.63/221,472.29
  6. Step 6: Final answer
    x = 199,972.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.