Home / 278,803.82-384,736.74-157,942.64

Finding the Fourth Proportional to 278,803.82, 384,736.74 and 157,942.64

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Solution

The fourth proportional to 278,803.82, 384,736.74 and 157,942.64 is: 217,953.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,803.82 : 384,736.74 = 157,942.64 : x
  2. Step 2: Convert to fraction form
    278,803.82/384,736.74 = 157,942.64/x
  3. Step 3: Cross multiply
    278,803.82x = 384,736.74 × 157,942.64
  4. Step 4: Simplify right side
    278,803.82x = 60,766,336,790.15
  5. Step 5: Solve for x
    x = 60,766,336,790.15/278,803.82
  6. Step 6: Final answer
    x = 217,953.74

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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.