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Finding the Fourth Proportional to 219,373.57, 328,992.31 and 79,113.97

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Solution

The fourth proportional to 219,373.57, 328,992.31 and 79,113.97 is: 118,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,373.57 : 328,992.31 = 79,113.97 : x
  2. Step 2: Convert to fraction form
    219,373.57/328,992.31 = 79,113.97/x
  3. Step 3: Cross multiply
    219,373.57x = 328,992.31 × 79,113.97
  4. Step 4: Simplify right side
    219,373.57x = 26,027,887,743.57
  5. Step 5: Solve for x
    x = 26,027,887,743.57/219,373.57
  6. Step 6: Final answer
    x = 118,646.42

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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.