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Finding the Fourth Proportional to 215,219.80, 322,683.90 and 109,952.20

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Solution

The fourth proportional to 215,219.80, 322,683.90 and 109,952.20 is: 164,853.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,219.80 : 322,683.90 = 109,952.20 : x
  2. Step 2: Convert to fraction form
    215,219.80/322,683.90 = 109,952.20/x
  3. Step 3: Cross multiply
    215,219.80x = 322,683.90 × 109,952.20
  4. Step 4: Simplify right side
    215,219.80x = 35,479,804,709.58
  5. Step 5: Solve for x
    x = 35,479,804,709.58/215,219.80
  6. Step 6: Final answer
    x = 164,853.81

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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.