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Finding the Fourth Proportional to 276,655.98, 381,961.81 and 225,790.22

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Solution

The fourth proportional to 276,655.98, 381,961.81 and 225,790.22 is: 311,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,655.98 : 381,961.81 = 225,790.22 : x
  2. Step 2: Convert to fraction form
    276,655.98/381,961.81 = 225,790.22/x
  3. Step 3: Cross multiply
    276,655.98x = 381,961.81 × 225,790.22
  4. Step 4: Simplify right side
    276,655.98x = 86,243,241,111.50
  5. Step 5: Solve for x
    x = 86,243,241,111.50/276,655.98
  6. Step 6: Final answer
    x = 311,734.60

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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.