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Finding the Fourth Proportional to 276,104.56, 381,020.10 and 155,246.08

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Solution

The fourth proportional to 276,104.56, 381,020.10 and 155,246.08 is: 214,237.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,104.56 : 381,020.10 = 155,246.08 : x
  2. Step 2: Convert to fraction form
    276,104.56/381,020.10 = 155,246.08/x
  3. Step 3: Cross multiply
    276,104.56x = 381,020.10 × 155,246.08
  4. Step 4: Simplify right side
    276,104.56x = 59,151,876,926.21
  5. Step 5: Solve for x
    x = 59,151,876,926.21/276,104.56
  6. Step 6: Final answer
    x = 214,237.23

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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.