Home / 219,109.57-328,700.68-76,917.97

Finding the Fourth Proportional to 219,109.57, 328,700.68 and 76,917.97

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Solution

The fourth proportional to 219,109.57, 328,700.68 and 76,917.97 is: 115,389.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,109.57 : 328,700.68 = 76,917.97 : x
  2. Step 2: Convert to fraction form
    219,109.57/328,700.68 = 76,917.97/x
  3. Step 3: Cross multiply
    219,109.57x = 328,700.68 × 76,917.97
  4. Step 4: Simplify right side
    219,109.57x = 25,282,989,043.22
  5. Step 5: Solve for x
    x = 25,282,989,043.22/219,109.57
  6. Step 6: Final answer
    x = 115,389.71

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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.