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Finding the Fourth Proportional to 221,637.94, 332,503.62 and 71,866.56

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Solution

The fourth proportional to 221,637.94, 332,503.62 and 71,866.56 is: 107,814.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,637.94 : 332,503.62 = 71,866.56 : x
  2. Step 2: Convert to fraction form
    221,637.94/332,503.62 = 71,866.56/x
  3. Step 3: Cross multiply
    221,637.94x = 332,503.62 × 71,866.56
  4. Step 4: Simplify right side
    221,637.94x = 23,895,889,335.10
  5. Step 5: Solve for x
    x = 23,895,889,335.10/221,637.94
  6. Step 6: Final answer
    x = 107,814.98

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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.