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Finding the Fourth Proportional to 276,405.88, 381,459.48 and 155,558.80

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Solution

The fourth proportional to 276,405.88, 381,459.48 and 155,558.80 is: 214,682.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,405.88 : 381,459.48 = 155,558.80 : x
  2. Step 2: Convert to fraction form
    276,405.88/381,459.48 = 155,558.80/x
  3. Step 3: Cross multiply
    276,405.88x = 381,459.48 × 155,558.80
  4. Step 4: Simplify right side
    276,405.88x = 59,339,378,957.42
  5. Step 5: Solve for x
    x = 59,339,378,957.42/276,405.88
  6. Step 6: Final answer
    x = 214,682.04

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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.