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Finding the Fourth Proportional to 221,909.40, 332,669.70 and 133,068.60

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Solution

The fourth proportional to 221,909.40, 332,669.70 and 133,068.60 is: 199,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,909.40 : 332,669.70 = 133,068.60 : x
  2. Step 2: Convert to fraction form
    221,909.40/332,669.70 = 133,068.60/x
  3. Step 3: Cross multiply
    221,909.40x = 332,669.70 × 133,068.60
  4. Step 4: Simplify right side
    221,909.40x = 44,267,891,241.42
  5. Step 5: Solve for x
    x = 44,267,891,241.42/221,909.40
  6. Step 6: Final answer
    x = 199,486.33

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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.