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Finding the Fourth Proportional to 276,143.88, 414,216.90 and 84,020.22

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Solution

The fourth proportional to 276,143.88, 414,216.90 and 84,020.22 is: 126,030.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,143.88 : 414,216.90 = 84,020.22 : x
  2. Step 2: Convert to fraction form
    276,143.88/414,216.90 = 84,020.22/x
  3. Step 3: Cross multiply
    276,143.88x = 414,216.90 × 84,020.22
  4. Step 4: Simplify right side
    276,143.88x = 34,802,595,065.72
  5. Step 5: Solve for x
    x = 34,802,595,065.72/276,143.88
  6. Step 6: Final answer
    x = 126,030.66

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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.