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Finding the Fourth Proportional to 221,473.20, 332,258.40 and 71,720.40

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Solution

The fourth proportional to 221,473.20, 332,258.40 and 71,720.40 is: 107,596.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,473.20 : 332,258.40 = 71,720.40 : x
  2. Step 2: Convert to fraction form
    221,473.20/332,258.40 = 71,720.40/x
  3. Step 3: Cross multiply
    221,473.20x = 332,258.40 × 71,720.40
  4. Step 4: Simplify right side
    221,473.20x = 23,829,705,351.36
  5. Step 5: Solve for x
    x = 23,829,705,351.36/221,473.20
  6. Step 6: Final answer
    x = 107,596.34

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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.