Home / 278,941.62-418,177.26-121,051.11

Finding the Fourth Proportional to 278,941.62, 418,177.26 and 121,051.11

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Solution

The fourth proportional to 278,941.62, 418,177.26 and 121,051.11 is: 181,474.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,941.62 : 418,177.26 = 121,051.11 : x
  2. Step 2: Convert to fraction form
    278,941.62/418,177.26 = 121,051.11/x
  3. Step 3: Cross multiply
    278,941.62x = 418,177.26 × 121,051.11
  4. Step 4: Simplify right side
    278,941.62x = 50,620,821,499.76
  5. Step 5: Solve for x
    x = 50,620,821,499.76/278,941.62
  6. Step 6: Final answer
    x = 181,474.61

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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.