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Finding the Fourth Proportional to 221,667.05, 332,570.32 and 79,415.38

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Solution

The fourth proportional to 221,667.05, 332,570.32 and 79,415.38 is: 119,148.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,667.05 : 332,570.32 = 79,415.38 : x
  2. Step 2: Convert to fraction form
    221,667.05/332,570.32 = 79,415.38/x
  3. Step 3: Cross multiply
    221,667.05x = 332,570.32 × 79,415.38
  4. Step 4: Simplify right side
    221,667.05x = 26,411,198,339.52
  5. Step 5: Solve for x
    x = 26,411,198,339.52/221,667.05
  6. Step 6: Final answer
    x = 119,148.06

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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.