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Finding the Fourth Proportional to 221,476.60, 332,214.90 and 161,990.20

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Solution

The fourth proportional to 221,476.60, 332,214.90 and 161,990.20 is: 242,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,476.60 : 332,214.90 = 161,990.20 : x
  2. Step 2: Convert to fraction form
    221,476.60/332,214.90 = 161,990.20/x
  3. Step 3: Cross multiply
    221,476.60x = 332,214.90 × 161,990.20
  4. Step 4: Simplify right side
    221,476.60x = 53,815,558,093.98
  5. Step 5: Solve for x
    x = 53,815,558,093.98/221,476.60
  6. Step 6: Final answer
    x = 242,985.30

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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.