Home / 219,743.40-329,550.30-86,579.40

Finding the Fourth Proportional to 219,743.40, 329,550.30 and 86,579.40

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Solution

The fourth proportional to 219,743.40, 329,550.30 and 86,579.40 is: 129,843.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,743.40 : 329,550.30 = 86,579.40 : x
  2. Step 2: Convert to fraction form
    219,743.40/329,550.30 = 86,579.40/x
  3. Step 3: Cross multiply
    219,743.40x = 329,550.30 × 86,579.40
  4. Step 4: Simplify right side
    219,743.40x = 28,532,267,243.82
  5. Step 5: Solve for x
    x = 28,532,267,243.82/219,743.40
  6. Step 6: Final answer
    x = 129,843.57

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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.