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Finding the Fourth Proportional to 221,755.20, 332,632.80 and 219,422.40

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Solution

The fourth proportional to 221,755.20, 332,632.80 and 219,422.40 is: 329,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,755.20 : 332,632.80 = 219,422.40 : x
  2. Step 2: Convert to fraction form
    221,755.20/332,632.80 = 219,422.40/x
  3. Step 3: Cross multiply
    221,755.20x = 332,632.80 × 219,422.40
  4. Step 4: Simplify right side
    221,755.20x = 72,987,087,294.72
  5. Step 5: Solve for x
    x = 72,987,087,294.72/221,755.20
  6. Step 6: Final answer
    x = 329,133.60

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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.