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Finding the Fourth Proportional to 221,609.80, 331,946.70 and 146,765.80

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Solution

The fourth proportional to 221,609.80, 331,946.70 and 146,765.80 is: 219,838.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,609.80 : 331,946.70 = 146,765.80 : x
  2. Step 2: Convert to fraction form
    221,609.80/331,946.70 = 146,765.80/x
  3. Step 3: Cross multiply
    221,609.80x = 331,946.70 × 146,765.80
  4. Step 4: Simplify right side
    221,609.80x = 48,718,422,982.86
  5. Step 5: Solve for x
    x = 48,718,422,982.86/221,609.80
  6. Step 6: Final answer
    x = 219,838.76

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1.5x scale

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.