Home / 278,847.36-418,271.04-68,485.23

Finding the Fourth Proportional to 278,847.36, 418,271.04 and 68,485.23

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Solution

The fourth proportional to 278,847.36, 418,271.04 and 68,485.23 is: 102,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,847.36 : 418,271.04 = 68,485.23 : x
  2. Step 2: Convert to fraction form
    278,847.36/418,271.04 = 68,485.23/x
  3. Step 3: Cross multiply
    278,847.36x = 418,271.04 × 68,485.23
  4. Step 4: Simplify right side
    278,847.36x = 28,645,388,376.74
  5. Step 5: Solve for x
    x = 28,645,388,376.74/278,847.36
  6. Step 6: Final answer
    x = 102,727.85

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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.