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Finding the Fourth Proportional to 276,531.84, 381,650.31 and 155,696.67

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Solution

The fourth proportional to 276,531.84, 381,650.31 and 155,696.67 is: 214,881.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,531.84 : 381,650.31 = 155,696.67 : x
  2. Step 2: Convert to fraction form
    276,531.84/381,650.31 = 155,696.67/x
  3. Step 3: Cross multiply
    276,531.84x = 381,650.31 × 155,696.67
  4. Step 4: Simplify right side
    276,531.84x = 59,421,682,371.47
  5. Step 5: Solve for x
    x = 59,421,682,371.47/276,531.84
  6. Step 6: Final answer
    x = 214,881.88

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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.