Home / 219,564.60-329,433.30-86,422.20

Finding the Fourth Proportional to 219,564.60, 329,433.30 and 86,422.20

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Solution

The fourth proportional to 219,564.60, 329,433.30 and 86,422.20 is: 129,667.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,564.60 : 329,433.30 = 86,422.20 : x
  2. Step 2: Convert to fraction form
    219,564.60/329,433.30 = 86,422.20/x
  3. Step 3: Cross multiply
    219,564.60x = 329,433.30 × 86,422.20
  4. Step 4: Simplify right side
    219,564.60x = 28,470,350,539.26
  5. Step 5: Solve for x
    x = 28,470,350,539.26/219,564.60
  6. Step 6: Final answer
    x = 129,667.31

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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.