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Finding the Fourth Proportional to 220,362.75, 330,637.66 and 120,406.17

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Solution

The fourth proportional to 220,362.75, 330,637.66 and 120,406.17 is: 180,660.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,362.75 : 330,637.66 = 120,406.17 : x
  2. Step 2: Convert to fraction form
    220,362.75/330,637.66 = 120,406.17/x
  3. Step 3: Cross multiply
    220,362.75x = 330,637.66 × 120,406.17
  4. Step 4: Simplify right side
    220,362.75x = 39,810,815,237.24
  5. Step 5: Solve for x
    x = 39,810,815,237.24/220,362.75
  6. Step 6: Final answer
    x = 180,660.37

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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.