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Finding the Fourth Proportional to 219,478.80, 329,266.80 and 101,121.60

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Solution

The fourth proportional to 219,478.80, 329,266.80 and 101,121.60 is: 151,704.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,478.80 : 329,266.80 = 101,121.60 : x
  2. Step 2: Convert to fraction form
    219,478.80/329,266.80 = 101,121.60/x
  3. Step 3: Cross multiply
    219,478.80x = 329,266.80 × 101,121.60
  4. Step 4: Simplify right side
    219,478.80x = 33,295,985,642.88
  5. Step 5: Solve for x
    x = 33,295,985,642.88/219,478.80
  6. Step 6: Final answer
    x = 151,704.79

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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.