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Finding the Fourth Proportional to 276,066.67, 380,975.92 and 155,201.20

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Solution

The fourth proportional to 276,066.67, 380,975.92 and 155,201.20 is: 214,179.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,066.67 : 380,975.92 = 155,201.20 : x
  2. Step 2: Convert to fraction form
    276,066.67/380,975.92 = 155,201.20/x
  3. Step 3: Cross multiply
    276,066.67x = 380,975.92 × 155,201.20
  4. Step 4: Simplify right side
    276,066.67x = 59,127,919,955.10
  5. Step 5: Solve for x
    x = 59,127,919,955.10/276,066.67
  6. Step 6: Final answer
    x = 214,179.86

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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.