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Finding the Fourth Proportional to 219,861.50, 329,805.32 and 84,926.61

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Solution

The fourth proportional to 219,861.50, 329,805.32 and 84,926.61 is: 127,394.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,861.50 : 329,805.32 = 84,926.61 : x
  2. Step 2: Convert to fraction form
    219,861.50/329,805.32 = 84,926.61/x
  3. Step 3: Cross multiply
    219,861.50x = 329,805.32 × 84,926.61
  4. Step 4: Simplify right side
    219,861.50x = 28,009,247,362.93
  5. Step 5: Solve for x
    x = 28,009,247,362.93/219,861.50
  6. Step 6: Final answer
    x = 127,394.96

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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.