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Finding the Fourth Proportional to 221,485.20, 332,276.40 and 109,219.20

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Solution

The fourth proportional to 221,485.20, 332,276.40 and 109,219.20 is: 163,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,485.20 : 332,276.40 = 109,219.20 : x
  2. Step 2: Convert to fraction form
    221,485.20/332,276.40 = 109,219.20/x
  3. Step 3: Cross multiply
    221,485.20x = 332,276.40 × 109,219.20
  4. Step 4: Simplify right side
    221,485.20x = 36,290,962,586.88
  5. Step 5: Solve for x
    x = 36,290,962,586.88/221,485.20
  6. Step 6: Final answer
    x = 163,852.77

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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.