Home / 276,173.15-381,115.33-155,314.40

Finding the Fourth Proportional to 276,173.15, 381,115.33 and 155,314.40

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Solution

The fourth proportional to 276,173.15, 381,115.33 and 155,314.40 is: 214,331.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,173.15 : 381,115.33 = 155,314.40 : x
  2. Step 2: Convert to fraction form
    276,173.15/381,115.33 = 155,314.40/x
  3. Step 3: Cross multiply
    276,173.15x = 381,115.33 × 155,314.40
  4. Step 4: Simplify right side
    276,173.15x = 59,192,696,515.89
  5. Step 5: Solve for x
    x = 59,192,696,515.89/276,173.15
  6. Step 6: Final answer
    x = 214,331.83

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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.