Home / 278,623.74-384,505.23-157,761.80

Finding the Fourth Proportional to 278,623.74, 384,505.23 and 157,761.80

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Solution

The fourth proportional to 278,623.74, 384,505.23 and 157,761.80 is: 217,713.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,623.74 : 384,505.23 = 157,761.80 : x
  2. Step 2: Convert to fraction form
    278,623.74/384,505.23 = 157,761.80/x
  3. Step 3: Cross multiply
    278,623.74x = 384,505.23 × 157,761.80
  4. Step 4: Simplify right side
    278,623.74x = 60,660,237,194.21
  5. Step 5: Solve for x
    x = 60,660,237,194.21/278,623.74
  6. Step 6: Final answer
    x = 217,713.81

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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.