Home / 278,837.24-418,255.01-79,157.77

Finding the Fourth Proportional to 278,837.24, 418,255.01 and 79,157.77

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Solution

The fourth proportional to 278,837.24, 418,255.01 and 79,157.77 is: 118,736.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,837.24 : 418,255.01 = 79,157.77 : x
  2. Step 2: Convert to fraction form
    278,837.24/418,255.01 = 79,157.77/x
  3. Step 3: Cross multiply
    278,837.24x = 418,255.01 × 79,157.77
  4. Step 4: Simplify right side
    278,837.24x = 33,108,132,441.50
  5. Step 5: Solve for x
    x = 33,108,132,441.50/278,837.24
  6. Step 6: Final answer
    x = 118,736.41

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1.5x scale

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.