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Finding the Fourth Proportional to 219,378.60, 329,067.89 and 53,166.60

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Solution

The fourth proportional to 219,378.60, 329,067.89 and 53,166.60 is: 79,749.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,378.60 : 329,067.89 = 53,166.60 : x
  2. Step 2: Convert to fraction form
    219,378.60/329,067.89 = 53,166.60/x
  3. Step 3: Cross multiply
    219,378.60x = 329,067.89 × 53,166.60
  4. Step 4: Simplify right side
    219,378.60x = 17,495,419,235.13
  5. Step 5: Solve for x
    x = 17,495,419,235.13/219,378.60
  6. Step 6: Final answer
    x = 79,749.89

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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.