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Finding the Fourth Proportional to 219,881.70, 329,822.55 and 217,548.90

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Solution

The fourth proportional to 219,881.70, 329,822.55 and 217,548.90 is: 326,323.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,881.70 : 329,822.55 = 217,548.90 : x
  2. Step 2: Convert to fraction form
    219,881.70/329,822.55 = 217,548.90/x
  3. Step 3: Cross multiply
    219,881.70x = 329,822.55 × 217,548.90
  4. Step 4: Simplify right side
    219,881.70x = 71,752,532,947.70
  5. Step 5: Solve for x
    x = 71,752,532,947.70/219,881.70
  6. Step 6: Final answer
    x = 326,323.35

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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.