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Finding the Fourth Proportional to 263,442.39, 395,182.08 and 105,670.86

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Solution

The fourth proportional to 263,442.39, 395,182.08 and 105,670.86 is: 158,513.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,442.39 : 395,182.08 = 105,670.86 : x
  2. Step 2: Convert to fraction form
    263,442.39/395,182.08 = 105,670.86/x
  3. Step 3: Cross multiply
    263,442.39x = 395,182.08 × 105,670.86
  4. Step 4: Simplify right side
    263,442.39x = 41,759,230,250.19
  5. Step 5: Solve for x
    x = 41,759,230,250.19/263,442.39
  6. Step 6: Final answer
    x = 158,513.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.