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Finding the Fourth Proportional to 221,665.80, 332,030.70 and 146,821.80

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Solution

The fourth proportional to 221,665.80, 332,030.70 and 146,821.80 is: 219,922.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,665.80 : 332,030.70 = 146,821.80 : x
  2. Step 2: Convert to fraction form
    221,665.80/332,030.70 = 146,821.80/x
  3. Step 3: Cross multiply
    221,665.80x = 332,030.70 × 146,821.80
  4. Step 4: Simplify right side
    221,665.80x = 48,749,345,029.26
  5. Step 5: Solve for x
    x = 48,749,345,029.26/221,665.80
  6. Step 6: Final answer
    x = 219,922.72

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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.