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Finding the Fourth Proportional to 221,683.90, 332,574.45 and 71,898.70

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Solution

The fourth proportional to 221,683.90, 332,574.45 and 71,898.70 is: 107,863.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,683.90 : 332,574.45 = 71,898.70 : x
  2. Step 2: Convert to fraction form
    221,683.90/332,574.45 = 71,898.70/x
  3. Step 3: Cross multiply
    221,683.90x = 332,574.45 × 71,898.70
  4. Step 4: Simplify right side
    221,683.90x = 23,911,670,608.22
  5. Step 5: Solve for x
    x = 23,911,670,608.22/221,683.90
  6. Step 6: Final answer
    x = 107,863.81

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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.