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Finding the Fourth Proportional to 207,046.20, 310,569.30 and 172,054.20

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Solution

The fourth proportional to 207,046.20, 310,569.30 and 172,054.20 is: 258,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,046.20 : 310,569.30 = 172,054.20 : x
  2. Step 2: Convert to fraction form
    207,046.20/310,569.30 = 172,054.20/x
  3. Step 3: Cross multiply
    207,046.20x = 310,569.30 × 172,054.20
  4. Step 4: Simplify right side
    207,046.20x = 53,434,752,456.06
  5. Step 5: Solve for x
    x = 53,434,752,456.06/207,046.20
  6. Step 6: Final answer
    x = 258,081.30

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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.