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Finding the Fourth Proportional to 378,066.80, 567,100.20 and 355,905.20

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Solution

The fourth proportional to 378,066.80, 567,100.20 and 355,905.20 is: 533,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,066.80 : 567,100.20 = 355,905.20 : x
  2. Step 2: Convert to fraction form
    378,066.80/567,100.20 = 355,905.20/x
  3. Step 3: Cross multiply
    378,066.80x = 567,100.20 × 355,905.20
  4. Step 4: Simplify right side
    378,066.80x = 201,833,910,101.04
  5. Step 5: Solve for x
    x = 201,833,910,101.04/378,066.80
  6. Step 6: Final answer
    x = 533,857.80

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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.