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Finding the Fourth Proportional to 276,643.80, 414,965.70 and 248,650.20

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Solution

The fourth proportional to 276,643.80, 414,965.70 and 248,650.20 is: 372,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,643.80 : 414,965.70 = 248,650.20 : x
  2. Step 2: Convert to fraction form
    276,643.80/414,965.70 = 248,650.20/x
  3. Step 3: Cross multiply
    276,643.80x = 414,965.70 × 248,650.20
  4. Step 4: Simplify right side
    276,643.80x = 103,181,304,298.14
  5. Step 5: Solve for x
    x = 103,181,304,298.14/276,643.80
  6. Step 6: Final answer
    x = 372,975.30

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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.