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Finding the Fourth Proportional to 219,953.62, 329,930.31 and 79,712.02

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Solution

The fourth proportional to 219,953.62, 329,930.31 and 79,712.02 is: 119,567.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,953.62 : 329,930.31 = 79,712.02 : x
  2. Step 2: Convert to fraction form
    219,953.62/329,930.31 = 79,712.02/x
  3. Step 3: Cross multiply
    219,953.62x = 329,930.31 × 79,712.02
  4. Step 4: Simplify right side
    219,953.62x = 26,299,411,469.33
  5. Step 5: Solve for x
    x = 26,299,411,469.33/219,953.62
  6. Step 6: Final answer
    x = 119,567.99

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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.