Home / 219,204.12-328,608.72-78,864

Finding the Fourth Proportional to 219,204.12, 328,608.72 and 78,864

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Solution

The fourth proportional to 219,204.12, 328,608.72 and 78,864 is: 118,224.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,204.12 : 328,608.72 = 78,864 : x
  2. Step 2: Convert to fraction form
    219,204.12/328,608.72 = 78,864/x
  3. Step 3: Cross multiply
    219,204.12x = 328,608.72 × 78,864
  4. Step 4: Simplify right side
    219,204.12x = 25,915,398,094.08
  5. Step 5: Solve for x
    x = 25,915,398,094.08/219,204.12
  6. Step 6: Final answer
    x = 118,224.96

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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.