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Finding the Fourth Proportional to 368,020.80, 551,739.60 and 201,808.80

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Solution

The fourth proportional to 368,020.80, 551,739.60 and 201,808.80 is: 302,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,020.80 : 551,739.60 = 201,808.80 : x
  2. Step 2: Convert to fraction form
    368,020.80/551,739.60 = 201,808.80/x
  3. Step 3: Cross multiply
    368,020.80x = 551,739.60 × 201,808.80
  4. Step 4: Simplify right side
    368,020.80x = 111,345,906,588.48
  5. Step 5: Solve for x
    x = 111,345,906,588.48/368,020.80
  6. Step 6: Final answer
    x = 302,553.30

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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.