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Finding the Fourth Proportional to 205,370.10, 308,055.15 and 172,893.15

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Solution

The fourth proportional to 205,370.10, 308,055.15 and 172,893.15 is: 259,339.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,370.10 : 308,055.15 = 172,893.15 : x
  2. Step 2: Convert to fraction form
    205,370.10/308,055.15 = 172,893.15/x
  3. Step 3: Cross multiply
    205,370.10x = 308,055.15 × 172,893.15
  4. Step 4: Simplify right side
    205,370.10x = 53,260,625,257.22
  5. Step 5: Solve for x
    x = 53,260,625,257.22/205,370.10
  6. Step 6: Final answer
    x = 259,339.73

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1.5x scale

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.