Home / 279,545.03-419,321.18-79,871.93

Finding the Fourth Proportional to 279,545.03, 419,321.18 and 79,871.93

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Solution

The fourth proportional to 279,545.03, 419,321.18 and 79,871.93 is: 119,808.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,545.03 : 419,321.18 = 79,871.93 : x
  2. Step 2: Convert to fraction form
    279,545.03/419,321.18 = 79,871.93/x
  3. Step 3: Cross multiply
    279,545.03x = 419,321.18 × 79,871.93
  4. Step 4: Simplify right side
    279,545.03x = 33,491,990,039.55
  5. Step 5: Solve for x
    x = 33,491,990,039.55/279,545.03
  6. Step 6: Final answer
    x = 119,808.93

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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.