Home / 276,257.79-381,269.49-155,404.17

Finding the Fourth Proportional to 276,257.79, 381,269.49 and 155,404.17

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Solution

The fourth proportional to 276,257.79, 381,269.49 and 155,404.17 is: 214,476.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,257.79 : 381,269.49 = 155,404.17 : x
  2. Step 2: Convert to fraction form
    276,257.79/381,269.49 = 155,404.17/x
  3. Step 3: Cross multiply
    276,257.79x = 381,269.49 × 155,404.17
  4. Step 4: Simplify right side
    276,257.79x = 59,250,868,639.77
  5. Step 5: Solve for x
    x = 59,250,868,639.77/276,257.79
  6. Step 6: Final answer
    x = 214,476.73

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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.