Home / 219,420.48-329,131.20-79,278.08

Finding the Fourth Proportional to 219,420.48, 329,131.20 and 79,278.08

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Solution

The fourth proportional to 219,420.48, 329,131.20 and 79,278.08 is: 118,917.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,420.48 : 329,131.20 = 79,278.08 : x
  2. Step 2: Convert to fraction form
    219,420.48/329,131.20 = 79,278.08/x
  3. Step 3: Cross multiply
    219,420.48x = 329,131.20 × 79,278.08
  4. Step 4: Simplify right side
    219,420.48x = 26,092,889,604.10
  5. Step 5: Solve for x
    x = 26,092,889,604.10/219,420.48
  6. Step 6: Final answer
    x = 118,917.29

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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.