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Finding the Fourth Proportional to 276,396, 381,422.00 and 155,537.22

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Solution

The fourth proportional to 276,396, 381,422.00 and 155,537.22 is: 214,638.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,396 : 381,422.00 = 155,537.22 : x
  2. Step 2: Convert to fraction form
    276,396/381,422.00 = 155,537.22/x
  3. Step 3: Cross multiply
    276,396x = 381,422.00 × 155,537.22
  4. Step 4: Simplify right side
    276,396x = 59,325,316,749.15
  5. Step 5: Solve for x
    x = 59,325,316,749.15/276,396
  6. Step 6: Final answer
    x = 214,638.84

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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.