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Finding the Fourth Proportional to 219,803.92, 329,695.96 and 91,667.43

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Solution

The fourth proportional to 219,803.92, 329,695.96 and 91,667.43 is: 137,497.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,803.92 : 329,695.96 = 91,667.43 : x
  2. Step 2: Convert to fraction form
    219,803.92/329,695.96 = 91,667.43/x
  3. Step 3: Cross multiply
    219,803.92x = 329,695.96 × 91,667.43
  4. Step 4: Simplify right side
    219,803.92x = 30,222,380,281.17
  5. Step 5: Solve for x
    x = 30,222,380,281.17/219,803.92
  6. Step 6: Final answer
    x = 137,497.01

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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.