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Finding the Fourth Proportional to 221,409.42, 332,119.20 and 79,264.41

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Solution

The fourth proportional to 221,409.42, 332,119.20 and 79,264.41 is: 118,898.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,409.42 : 332,119.20 = 79,264.41 : x
  2. Step 2: Convert to fraction form
    221,409.42/332,119.20 = 79,264.41/x
  3. Step 3: Cross multiply
    221,409.42x = 332,119.20 × 79,264.41
  4. Step 4: Simplify right side
    221,409.42x = 26,325,232,437.67
  5. Step 5: Solve for x
    x = 26,325,232,437.67/221,409.42
  6. Step 6: Final answer
    x = 118,898.43

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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.