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Finding the Fourth Proportional to 207,245.31, 285,998.54 and 117,821.31

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Solution

The fourth proportional to 207,245.31, 285,998.54 and 117,821.31 is: 162,593.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,245.31 : 285,998.54 = 117,821.31 : x
  2. Step 2: Convert to fraction form
    207,245.31/285,998.54 = 117,821.31/x
  3. Step 3: Cross multiply
    207,245.31x = 285,998.54 × 117,821.31
  4. Step 4: Simplify right side
    207,245.31x = 33,696,722,640.89
  5. Step 5: Solve for x
    x = 33,696,722,640.89/207,245.31
  6. Step 6: Final answer
    x = 162,593.41

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1.5x scale

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.