Home / 276,142.50-381,074.27-155,281.21

Finding the Fourth Proportional to 276,142.50, 381,074.27 and 155,281.21

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Solution

The fourth proportional to 276,142.50, 381,074.27 and 155,281.21 is: 214,286.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,142.50 : 381,074.27 = 155,281.21 : x
  2. Step 2: Convert to fraction form
    276,142.50/381,074.27 = 155,281.21/x
  3. Step 3: Cross multiply
    276,142.50x = 381,074.27 × 155,281.21
  4. Step 4: Simplify right side
    276,142.50x = 59,173,675,569.26
  5. Step 5: Solve for x
    x = 59,173,675,569.26/276,142.50
  6. Step 6: Final answer
    x = 214,286.73

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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.