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Finding the Fourth Proportional to 220,783.20, 331,199.10 and 80,572.20

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Solution

The fourth proportional to 220,783.20, 331,199.10 and 80,572.20 is: 120,867.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,783.20 : 331,199.10 = 80,572.20 : x
  2. Step 2: Convert to fraction form
    220,783.20/331,199.10 = 80,572.20/x
  3. Step 3: Cross multiply
    220,783.20x = 331,199.10 × 80,572.20
  4. Step 4: Simplify right side
    220,783.20x = 26,685,440,125.02
  5. Step 5: Solve for x
    x = 26,685,440,125.02/220,783.20
  6. Step 6: Final answer
    x = 120,867.17

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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.