Home / 278,827.37-418,240.21-79,147.92

Finding the Fourth Proportional to 278,827.37, 418,240.21 and 79,147.92

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Solution

The fourth proportional to 278,827.37, 418,240.21 and 79,147.92 is: 118,721.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,827.37 : 418,240.21 = 79,147.92 : x
  2. Step 2: Convert to fraction form
    278,827.37/418,240.21 = 79,147.92/x
  3. Step 3: Cross multiply
    278,827.37x = 418,240.21 × 79,147.92
  4. Step 4: Simplify right side
    278,827.37x = 33,102,843,490.80
  5. Step 5: Solve for x
    x = 33,102,843,490.80/278,827.37
  6. Step 6: Final answer
    x = 118,721.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.