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Finding the Fourth Proportional to 378,194.20, 567,291.30 and 191,570.20

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Solution

The fourth proportional to 378,194.20, 567,291.30 and 191,570.20 is: 287,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,194.20 : 567,291.30 = 191,570.20 : x
  2. Step 2: Convert to fraction form
    378,194.20/567,291.30 = 191,570.20/x
  3. Step 3: Cross multiply
    378,194.20x = 567,291.30 × 191,570.20
  4. Step 4: Simplify right side
    378,194.20x = 108,676,107,799.26
  5. Step 5: Solve for x
    x = 108,676,107,799.26/378,194.20
  6. Step 6: Final answer
    x = 287,355.30

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1.5x scale

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.