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Finding the Fourth Proportional to 276,603.60, 381,688.74 and 154,086.96

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Solution

The fourth proportional to 276,603.60, 381,688.74 and 154,086.96 is: 212,626.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,603.60 : 381,688.74 = 154,086.96 : x
  2. Step 2: Convert to fraction form
    276,603.60/381,688.74 = 154,086.96/x
  3. Step 3: Cross multiply
    276,603.60x = 381,688.74 × 154,086.96
  4. Step 4: Simplify right side
    276,603.60x = 58,813,257,612.83
  5. Step 5: Solve for x
    x = 58,813,257,612.83/276,603.60
  6. Step 6: Final answer
    x = 212,626.51

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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.