Home / 278,829.01-418,242.67-79,149.56

Finding the Fourth Proportional to 278,829.01, 418,242.67 and 79,149.56

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Solution

The fourth proportional to 278,829.01, 418,242.67 and 79,149.56 is: 118,724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,829.01 : 418,242.67 = 79,149.56 : x
  2. Step 2: Convert to fraction form
    278,829.01/418,242.67 = 79,149.56/x
  3. Step 3: Cross multiply
    278,829.01x = 418,242.67 × 79,149.56
  4. Step 4: Simplify right side
    278,829.01x = 33,103,723,303.73
  5. Step 5: Solve for x
    x = 33,103,723,303.73/278,829.01
  6. Step 6: Final answer
    x = 118,724.10

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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.