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Finding the Fourth Proportional to 221,622.12, 305,793.18 and 130,932.63

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Solution

The fourth proportional to 221,622.12, 305,793.18 and 130,932.63 is: 180,660.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,622.12 : 305,793.18 = 130,932.63 : x
  2. Step 2: Convert to fraction form
    221,622.12/305,793.18 = 130,932.63/x
  3. Step 3: Cross multiply
    221,622.12x = 305,793.18 × 130,932.63
  4. Step 4: Simplify right side
    221,622.12x = 40,038,305,293.46
  5. Step 5: Solve for x
    x = 40,038,305,293.46/221,622.12
  6. Step 6: Final answer
    x = 180,660.24

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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.