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Finding the Fourth Proportional to 219,740.82, 329,624.10 and 84,805.61

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Solution

The fourth proportional to 219,740.82, 329,624.10 and 84,805.61 is: 127,213.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,740.82 : 329,624.10 = 84,805.61 : x
  2. Step 2: Convert to fraction form
    219,740.82/329,624.10 = 84,805.61/x
  3. Step 3: Cross multiply
    219,740.82x = 329,624.10 × 84,805.61
  4. Step 4: Simplify right side
    219,740.82x = 27,953,971,223.08
  5. Step 5: Solve for x
    x = 27,953,971,223.08/219,740.82
  6. Step 6: Final answer
    x = 127,213.37

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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.