Home / 278,979.66-384,898.23-158,111.46

Finding the Fourth Proportional to 278,979.66, 384,898.23 and 158,111.46

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Solution

The fourth proportional to 278,979.66, 384,898.23 and 158,111.46 is: 218,140.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,979.66 : 384,898.23 = 158,111.46 : x
  2. Step 2: Convert to fraction form
    278,979.66/384,898.23 = 158,111.46/x
  3. Step 3: Cross multiply
    278,979.66x = 384,898.23 × 158,111.46
  4. Step 4: Simplify right side
    278,979.66x = 60,856,821,096.72
  5. Step 5: Solve for x
    x = 60,856,821,096.72/278,979.66
  6. Step 6: Final answer
    x = 218,140.71

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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.