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Finding the Fourth Proportional to 276,419.00, 381,454.18 and 155,550.80

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Solution

The fourth proportional to 276,419.00, 381,454.18 and 155,550.80 is: 214,657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,419.00 : 381,454.18 = 155,550.80 : x
  2. Step 2: Convert to fraction form
    276,419.00/381,454.18 = 155,550.80/x
  3. Step 3: Cross multiply
    276,419.00x = 381,454.18 × 155,550.80
  4. Step 4: Simplify right side
    276,419.00x = 59,335,503,427.10
  5. Step 5: Solve for x
    x = 59,335,503,427.10/276,419.00
  6. Step 6: Final answer
    x = 214,657.83

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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.