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Finding the Fourth Proportional to 263,679.15, 363,899.61 and 148,978.83

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Solution

The fourth proportional to 263,679.15, 363,899.61 and 148,978.83 is: 205,603.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,679.15 : 363,899.61 = 148,978.83 : x
  2. Step 2: Convert to fraction form
    263,679.15/363,899.61 = 148,978.83/x
  3. Step 3: Cross multiply
    263,679.15x = 363,899.61 × 148,978.83
  4. Step 4: Simplify right side
    263,679.15x = 54,213,338,135.26
  5. Step 5: Solve for x
    x = 54,213,338,135.26/263,679.15
  6. Step 6: Final answer
    x = 205,603.43

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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.