Home / 279,811.35-419,777.01-90,282.57

Finding the Fourth Proportional to 279,811.35, 419,777.01 and 90,282.57

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Solution

The fourth proportional to 279,811.35, 419,777.01 and 90,282.57 is: 135,443.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,811.35 : 419,777.01 = 90,282.57 : x
  2. Step 2: Convert to fraction form
    279,811.35/419,777.01 = 90,282.57/x
  3. Step 3: Cross multiply
    279,811.35x = 419,777.01 × 90,282.57
  4. Step 4: Simplify right side
    279,811.35x = 37,898,547,289.72
  5. Step 5: Solve for x
    x = 37,898,547,289.72/279,811.35
  6. Step 6: Final answer
    x = 135,443.21

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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.