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Finding the Fourth Proportional to 202,118.80, 303,834.30 and 143,361.40

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Solution

The fourth proportional to 202,118.80, 303,834.30 and 143,361.40 is: 215,507.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,118.80 : 303,834.30 = 143,361.40 : x
  2. Step 2: Convert to fraction form
    202,118.80/303,834.30 = 143,361.40/x
  3. Step 3: Cross multiply
    202,118.80x = 303,834.30 × 143,361.40
  4. Step 4: Simplify right side
    202,118.80x = 43,558,110,616.02
  5. Step 5: Solve for x
    x = 43,558,110,616.02/202,118.80
  6. Step 6: Final answer
    x = 215,507.47

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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.