Home / 278,674.47-384,575.19-157,812.48

Finding the Fourth Proportional to 278,674.47, 384,575.19 and 157,812.48

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Solution

The fourth proportional to 278,674.47, 384,575.19 and 157,812.48 is: 217,783.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,674.47 : 384,575.19 = 157,812.48 : x
  2. Step 2: Convert to fraction form
    278,674.47/384,575.19 = 157,812.48/x
  3. Step 3: Cross multiply
    278,674.47x = 384,575.19 × 157,812.48
  4. Step 4: Simplify right side
    278,674.47x = 60,690,764,480.37
  5. Step 5: Solve for x
    x = 60,690,764,480.37/278,674.47
  6. Step 6: Final answer
    x = 217,783.73

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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.