Home / 278,954.07-384,958.77-151,629.36

Finding the Fourth Proportional to 278,954.07, 384,958.77 and 151,629.36

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Solution

The fourth proportional to 278,954.07, 384,958.77 and 151,629.36 is: 209,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,954.07 : 384,958.77 = 151,629.36 : x
  2. Step 2: Convert to fraction form
    278,954.07/384,958.77 = 151,629.36/x
  3. Step 3: Cross multiply
    278,954.07x = 384,958.77 × 151,629.36
  4. Step 4: Simplify right side
    278,954.07x = 58,371,051,921.49
  5. Step 5: Solve for x
    x = 58,371,051,921.49/278,954.07
  6. Step 6: Final answer
    x = 209,249.69

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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.