Home / 278,474.28-384,607.96-188,203.13

Finding the Fourth Proportional to 278,474.28, 384,607.96 and 188,203.13

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Solution

The fourth proportional to 278,474.28, 384,607.96 and 188,203.13 is: 259,932.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,474.28 : 384,607.96 = 188,203.13 : x
  2. Step 2: Convert to fraction form
    278,474.28/384,607.96 = 188,203.13/x
  3. Step 3: Cross multiply
    278,474.28x = 384,607.96 × 188,203.13
  4. Step 4: Simplify right side
    278,474.28x = 72,384,419,971.88
  5. Step 5: Solve for x
    x = 72,384,419,971.88/278,474.28
  6. Step 6: Final answer
    x = 259,932.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.