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Finding the Fourth Proportional to 279,937.40, 419,906.10 and 276,006.20

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Solution

The fourth proportional to 279,937.40, 419,906.10 and 276,006.20 is: 414,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937.40 : 419,906.10 = 276,006.20 : x
  2. Step 2: Convert to fraction form
    279,937.40/419,906.10 = 276,006.20/x
  3. Step 3: Cross multiply
    279,937.40x = 419,906.10 × 276,006.20
  4. Step 4: Simplify right side
    279,937.40x = 115,896,687,017.82
  5. Step 5: Solve for x
    x = 115,896,687,017.82/279,937.40
  6. Step 6: Final answer
    x = 414,009.30

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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.