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Finding the Fourth Proportional to 172,310.88, 258,341.40 and 53,917.92

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Solution

The fourth proportional to 172,310.88, 258,341.40 and 53,917.92 is: 80,837.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,310.88 : 258,341.40 = 53,917.92 : x
  2. Step 2: Convert to fraction form
    172,310.88/258,341.40 = 53,917.92/x
  3. Step 3: Cross multiply
    172,310.88x = 258,341.40 × 53,917.92
  4. Step 4: Simplify right side
    172,310.88x = 13,929,230,937.89
  5. Step 5: Solve for x
    x = 13,929,230,937.89/172,310.88
  6. Step 6: Final answer
    x = 80,837.79

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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.