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Finding the Fourth Proportional to 221,667.55, 332,571.07 and 79,415.88

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Solution

The fourth proportional to 221,667.55, 332,571.07 and 79,415.88 is: 119,148.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,667.55 : 332,571.07 = 79,415.88 : x
  2. Step 2: Convert to fraction form
    221,667.55/332,571.07 = 79,415.88/x
  3. Step 3: Cross multiply
    221,667.55x = 332,571.07 × 79,415.88
  4. Step 4: Simplify right side
    221,667.55x = 26,411,424,186.59
  5. Step 5: Solve for x
    x = 26,411,424,186.59/221,667.55
  6. Step 6: Final answer
    x = 119,148.81

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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.