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Finding the Fourth Proportional to 276,040.66, 414,061.08 and 86,515.73

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Solution

The fourth proportional to 276,040.66, 414,061.08 and 86,515.73 is: 129,773.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,040.66 : 414,061.08 = 86,515.73 : x
  2. Step 2: Convert to fraction form
    276,040.66/414,061.08 = 86,515.73/x
  3. Step 3: Cross multiply
    276,040.66x = 414,061.08 × 86,515.73
  4. Step 4: Simplify right side
    276,040.66x = 35,822,795,457.49
  5. Step 5: Solve for x
    x = 35,822,795,457.49/276,040.66
  6. Step 6: Final answer
    x = 129,773.62

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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.