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Finding the Fourth Proportional to 219,634.80, 329,452.20 and 53,422.80

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Solution

The fourth proportional to 219,634.80, 329,452.20 and 53,422.80 is: 80,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,634.80 : 329,452.20 = 53,422.80 : x
  2. Step 2: Convert to fraction form
    219,634.80/329,452.20 = 53,422.80/x
  3. Step 3: Cross multiply
    219,634.80x = 329,452.20 × 53,422.80
  4. Step 4: Simplify right side
    219,634.80x = 17,600,258,990.16
  5. Step 5: Solve for x
    x = 17,600,258,990.16/219,634.80
  6. Step 6: Final answer
    x = 80,134.20

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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.