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Finding the Fourth Proportional to 231,790.04, 319,815.42 and 131,188.04

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Solution

The fourth proportional to 231,790.04, 319,815.42 and 131,188.04 is: 181,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,790.04 : 319,815.42 = 131,188.04 : x
  2. Step 2: Convert to fraction form
    231,790.04/319,815.42 = 131,188.04/x
  3. Step 3: Cross multiply
    231,790.04x = 319,815.42 × 131,188.04
  4. Step 4: Simplify right side
    231,790.04x = 41,955,956,512.50
  5. Step 5: Solve for x
    x = 41,955,956,512.50/231,790.04
  6. Step 6: Final answer
    x = 181,008.46

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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.