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Finding the Fourth Proportional to 219,324.30, 328,986.45 and 79,097.10

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Solution

The fourth proportional to 219,324.30, 328,986.45 and 79,097.10 is: 118,645.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,324.30 : 328,986.45 = 79,097.10 : x
  2. Step 2: Convert to fraction form
    219,324.30/328,986.45 = 79,097.10/x
  3. Step 3: Cross multiply
    219,324.30x = 328,986.45 × 79,097.10
  4. Step 4: Simplify right side
    219,324.30x = 26,021,874,134.30
  5. Step 5: Solve for x
    x = 26,021,874,134.30/219,324.30
  6. Step 6: Final answer
    x = 118,645.65

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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.