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Finding the Fourth Proportional to 220,086.95, 330,130.42 and 120,192.64

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Solution

The fourth proportional to 220,086.95, 330,130.42 and 120,192.64 is: 180,288.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,086.95 : 330,130.42 = 120,192.64 : x
  2. Step 2: Convert to fraction form
    220,086.95/330,130.42 = 120,192.64/x
  3. Step 3: Cross multiply
    220,086.95x = 330,130.42 × 120,192.64
  4. Step 4: Simplify right side
    220,086.95x = 39,679,245,598.30
  5. Step 5: Solve for x
    x = 39,679,245,598.30/220,086.95
  6. Step 6: Final answer
    x = 180,288.96

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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.