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Finding the Fourth Proportional to 231,259.94, 319,097.91 and 129,252.79

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Solution

The fourth proportional to 231,259.94, 319,097.91 and 129,252.79 is: 178,346.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,259.94 : 319,097.91 = 129,252.79 : x
  2. Step 2: Convert to fraction form
    231,259.94/319,097.91 = 129,252.79/x
  3. Step 3: Cross multiply
    231,259.94x = 319,097.91 × 129,252.79
  4. Step 4: Simplify right side
    231,259.94x = 41,244,295,150.67
  5. Step 5: Solve for x
    x = 41,244,295,150.67/231,259.94
  6. Step 6: Final answer
    x = 178,346.04

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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.