Home / 278,647.62-384,296.85-187,989.18

Finding the Fourth Proportional to 278,647.62, 384,296.85 and 187,989.18

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Solution

The fourth proportional to 278,647.62, 384,296.85 and 187,989.18 is: 259,265.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,647.62 : 384,296.85 = 187,989.18 : x
  2. Step 2: Convert to fraction form
    278,647.62/384,296.85 = 187,989.18/x
  3. Step 3: Cross multiply
    278,647.62x = 384,296.85 × 187,989.18
  4. Step 4: Simplify right side
    278,647.62x = 72,243,649,708.08
  5. Step 5: Solve for x
    x = 72,243,649,708.08/278,647.62
  6. Step 6: Final answer
    x = 259,265.27

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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.