Home / 219,208.12-328,614.72-78,868

Finding the Fourth Proportional to 219,208.12, 328,614.72 and 78,868

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Solution

The fourth proportional to 219,208.12, 328,614.72 and 78,868 is: 118,230.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,208.12 : 328,614.72 = 78,868 : x
  2. Step 2: Convert to fraction form
    219,208.12/328,614.72 = 78,868/x
  3. Step 3: Cross multiply
    219,208.12x = 328,614.72 × 78,868
  4. Step 4: Simplify right side
    219,208.12x = 25,917,185,736.96
  5. Step 5: Solve for x
    x = 25,917,185,736.96/219,208.12
  6. Step 6: Final answer
    x = 118,230.96

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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.