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Finding the Fourth Proportional to 219,344.60, 329,103.30 and 86,202.20

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Solution

The fourth proportional to 219,344.60, 329,103.30 and 86,202.20 is: 129,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,344.60 : 329,103.30 = 86,202.20 : x
  2. Step 2: Convert to fraction form
    219,344.60/329,103.30 = 86,202.20/x
  3. Step 3: Cross multiply
    219,344.60x = 329,103.30 × 86,202.20
  4. Step 4: Simplify right side
    219,344.60x = 28,369,428,487.26
  5. Step 5: Solve for x
    x = 28,369,428,487.26/219,344.60
  6. Step 6: Final answer
    x = 129,337.26

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1.5x scale

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.