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Finding the Fourth Proportional to 276,266.64, 381,249.78 and 155,406.96

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Solution

The fourth proportional to 276,266.64, 381,249.78 and 155,406.96 is: 214,462.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,266.64 : 381,249.78 = 155,406.96 : x
  2. Step 2: Convert to fraction form
    276,266.64/381,249.78 = 155,406.96/x
  3. Step 3: Cross multiply
    276,266.64x = 381,249.78 × 155,406.96
  4. Step 4: Simplify right side
    276,266.64x = 59,248,869,310.47
  5. Step 5: Solve for x
    x = 59,248,869,310.47/276,266.64
  6. Step 6: Final answer
    x = 214,462.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.