Home / 278,949.64-418,189.26-121,059.16

Finding the Fourth Proportional to 278,949.64, 418,189.26 and 121,059.16

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Solution

The fourth proportional to 278,949.64, 418,189.26 and 121,059.16 is: 181,486.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,949.64 : 418,189.26 = 121,059.16 : x
  2. Step 2: Convert to fraction form
    278,949.64/418,189.26 = 121,059.16/x
  3. Step 3: Cross multiply
    278,949.64x = 418,189.26 × 121,059.16
  4. Step 4: Simplify right side
    278,949.64x = 50,625,640,536.62
  5. Step 5: Solve for x
    x = 50,625,640,536.62/278,949.64
  6. Step 6: Final answer
    x = 181,486.67

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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.