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Finding the Fourth Proportional to 378,327.78, 567,574.70 and 112,109.13

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Solution

The fourth proportional to 378,327.78, 567,574.70 and 112,109.13 is: 168,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,327.78 : 567,574.70 = 112,109.13 : x
  2. Step 2: Convert to fraction form
    378,327.78/567,574.70 = 112,109.13/x
  3. Step 3: Cross multiply
    378,327.78x = 567,574.70 × 112,109.13
  4. Step 4: Simplify right side
    378,327.78x = 63,630,305,266.47
  5. Step 5: Solve for x
    x = 63,630,305,266.47/378,327.78
  6. Step 6: Final answer
    x = 168,188.30

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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.