Home / 278,568.50-418,018.79-101,089.36

Finding the Fourth Proportional to 278,568.50, 418,018.79 and 101,089.36

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Solution

The fourth proportional to 278,568.50, 418,018.79 and 101,089.36 is: 151,694.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,568.50 : 418,018.79 = 101,089.36 : x
  2. Step 2: Convert to fraction form
    278,568.50/418,018.79 = 101,089.36/x
  3. Step 3: Cross multiply
    278,568.50x = 418,018.79 × 101,089.36
  4. Step 4: Simplify right side
    278,568.50x = 42,257,251,949.07
  5. Step 5: Solve for x
    x = 42,257,251,949.07/278,568.50
  6. Step 6: Final answer
    x = 151,694.29

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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.