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Finding the Fourth Proportional to 202,336.80, 303,505.20 and 143,239.20

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Solution

The fourth proportional to 202,336.80, 303,505.20 and 143,239.20 is: 214,858.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,336.80 : 303,505.20 = 143,239.20 : x
  2. Step 2: Convert to fraction form
    202,336.80/303,505.20 = 143,239.20/x
  3. Step 3: Cross multiply
    202,336.80x = 303,505.20 × 143,239.20
  4. Step 4: Simplify right side
    202,336.80x = 43,473,842,043.84
  5. Step 5: Solve for x
    x = 43,473,842,043.84/202,336.80
  6. Step 6: Final answer
    x = 214,858.80

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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.