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Finding the Fourth Proportional to 219,920.70, 329,881.05 and 192,801.90

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Solution

The fourth proportional to 219,920.70, 329,881.05 and 192,801.90 is: 289,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,920.70 : 329,881.05 = 192,801.90 : x
  2. Step 2: Convert to fraction form
    219,920.70/329,881.05 = 192,801.90/x
  3. Step 3: Cross multiply
    219,920.70x = 329,881.05 × 192,801.90
  4. Step 4: Simplify right side
    219,920.70x = 63,601,693,214.00
  5. Step 5: Solve for x
    x = 63,601,693,214.00/219,920.70
  6. Step 6: Final answer
    x = 289,202.85

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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.