Home / 219,105.23-328,694.16-76,913.61

Finding the Fourth Proportional to 219,105.23, 328,694.16 and 76,913.61

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Solution

The fourth proportional to 219,105.23, 328,694.16 and 76,913.61 is: 115,383.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,105.23 : 328,694.16 = 76,913.61 : x
  2. Step 2: Convert to fraction form
    219,105.23/328,694.16 = 76,913.61/x
  3. Step 3: Cross multiply
    219,105.23x = 328,694.16 × 76,913.61
  4. Step 4: Simplify right side
    219,105.23x = 25,281,054,046.95
  5. Step 5: Solve for x
    x = 25,281,054,046.95/219,105.23
  6. Step 6: Final answer
    x = 115,383.16

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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.