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Finding the Fourth Proportional to 263,165.90, 363,146.90 and 155,717.10

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Solution

The fourth proportional to 263,165.90, 363,146.90 and 155,717.10 is: 214,876.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,165.90 : 363,146.90 = 155,717.10 : x
  2. Step 2: Convert to fraction form
    263,165.90/363,146.90 = 155,717.10/x
  3. Step 3: Cross multiply
    263,165.90x = 363,146.90 × 155,717.10
  4. Step 4: Simplify right side
    263,165.90x = 56,548,181,363.40
  5. Step 5: Solve for x
    x = 56,548,181,363.40/263,165.90
  6. Step 6: Final answer
    x = 214,876.56

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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.