Home / 278,448.76-384,249.54-151,121.80

Finding the Fourth Proportional to 278,448.76, 384,249.54 and 151,121.80

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Solution

The fourth proportional to 278,448.76, 384,249.54 and 151,121.80 is: 208,542.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,448.76 : 384,249.54 = 151,121.80 : x
  2. Step 2: Convert to fraction form
    278,448.76/384,249.54 = 151,121.80/x
  3. Step 3: Cross multiply
    278,448.76x = 384,249.54 × 151,121.80
  4. Step 4: Simplify right side
    278,448.76x = 58,068,482,133.97
  5. Step 5: Solve for x
    x = 58,068,482,133.97/278,448.76
  6. Step 6: Final answer
    x = 208,542.79

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1.5x scale

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.