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Finding the Fourth Proportional to 220,383.20, 330,623.40 and 70,630.40

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Solution

The fourth proportional to 220,383.20, 330,623.40 and 70,630.40 is: 105,961.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,383.20 : 330,623.40 = 70,630.40 : x
  2. Step 2: Convert to fraction form
    220,383.20/330,623.40 = 70,630.40/x
  3. Step 3: Cross multiply
    220,383.20x = 330,623.40 × 70,630.40
  4. Step 4: Simplify right side
    220,383.20x = 23,352,062,991.36
  5. Step 5: Solve for x
    x = 23,352,062,991.36/220,383.20
  6. Step 6: Final answer
    x = 105,961.18

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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.