Home / 278,574.15-418,099.80-276,477.36

Finding the Fourth Proportional to 278,574.15, 418,099.80 and 276,477.36

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Solution

The fourth proportional to 278,574.15, 418,099.80 and 276,477.36 is: 414,952.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,574.15 : 418,099.80 = 276,477.36 : x
  2. Step 2: Convert to fraction form
    278,574.15/418,099.80 = 276,477.36/x
  3. Step 3: Cross multiply
    278,574.15x = 418,099.80 × 276,477.36
  4. Step 4: Simplify right side
    278,574.15x = 115,595,128,920.53
  5. Step 5: Solve for x
    x = 115,595,128,920.53/278,574.15
  6. Step 6: Final answer
    x = 414,952.82

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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.