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Finding the Fourth Proportional to 219,452.40, 329,129.28 and 130,731.12

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Solution

The fourth proportional to 219,452.40, 329,129.28 and 130,731.12 is: 196,067.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,452.40 : 329,129.28 = 130,731.12 : x
  2. Step 2: Convert to fraction form
    219,452.40/329,129.28 = 130,731.12/x
  3. Step 3: Cross multiply
    219,452.40x = 329,129.28 × 130,731.12
  4. Step 4: Simplify right side
    219,452.40x = 43,027,439,399.19
  5. Step 5: Solve for x
    x = 43,027,439,399.19/219,452.40
  6. Step 6: Final answer
    x = 196,067.30

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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.