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Finding the Fourth Proportional to 258,063.30, 386,918.10 and 131,458.41

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Solution

The fourth proportional to 258,063.30, 386,918.10 and 131,458.41 is: 197,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,063.30 : 386,918.10 = 131,458.41 : x
  2. Step 2: Convert to fraction form
    258,063.30/386,918.10 = 131,458.41/x
  3. Step 3: Cross multiply
    258,063.30x = 386,918.10 × 131,458.41
  4. Step 4: Simplify right side
    258,063.30x = 50,863,638,226.22
  5. Step 5: Solve for x
    x = 50,863,638,226.22/258,063.30
  6. Step 6: Final answer
    x = 197,097.53

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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.