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Finding the Fourth Proportional to 275,919.79, 380,803.13 and 155,066.17

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Solution

The fourth proportional to 275,919.79, 380,803.13 and 155,066.17 is: 214,010.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,919.79 : 380,803.13 = 155,066.17 : x
  2. Step 2: Convert to fraction form
    275,919.79/380,803.13 = 155,066.17/x
  3. Step 3: Cross multiply
    275,919.79x = 380,803.13 × 155,066.17
  4. Step 4: Simplify right side
    275,919.79x = 59,049,682,893.11
  5. Step 5: Solve for x
    x = 59,049,682,893.11/275,919.79
  6. Step 6: Final answer
    x = 214,010.32

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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.