Home / 278,568.15-418,090.80-276,471.36

Finding the Fourth Proportional to 278,568.15, 418,090.80 and 276,471.36

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Solution

The fourth proportional to 278,568.15, 418,090.80 and 276,471.36 is: 414,943.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,568.15 : 418,090.80 = 276,471.36 : x
  2. Step 2: Convert to fraction form
    278,568.15/418,090.80 = 276,471.36/x
  3. Step 3: Cross multiply
    278,568.15x = 418,090.80 × 276,471.36
  4. Step 4: Simplify right side
    278,568.15x = 115,590,132,079.49
  5. Step 5: Solve for x
    x = 115,590,132,079.49/278,568.15
  6. Step 6: Final answer
    x = 414,943.82

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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.