Home / 278,642.27-384,644.04-188,120.85

Finding the Fourth Proportional to 278,642.27, 384,644.04 and 188,120.85

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Solution

The fourth proportional to 278,642.27, 384,644.04 and 188,120.85 is: 259,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,642.27 : 384,644.04 = 188,120.85 : x
  2. Step 2: Convert to fraction form
    278,642.27/384,644.04 = 188,120.85/x
  3. Step 3: Cross multiply
    278,642.27x = 384,644.04 × 188,120.85
  4. Step 4: Simplify right side
    278,642.27x = 72,359,563,015.27
  5. Step 5: Solve for x
    x = 72,359,563,015.27/278,642.27
  6. Step 6: Final answer
    x = 259,686.24

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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.