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Finding the Fourth Proportional to 207,245.50, 285,998.80 and 117,821.50

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Solution

The fourth proportional to 207,245.50, 285,998.80 and 117,821.50 is: 162,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,245.50 : 285,998.80 = 117,821.50 : x
  2. Step 2: Convert to fraction form
    207,245.50/285,998.80 = 117,821.50/x
  3. Step 3: Cross multiply
    207,245.50x = 285,998.80 × 117,821.50
  4. Step 4: Simplify right side
    207,245.50x = 33,696,807,614.20
  5. Step 5: Solve for x
    x = 33,696,807,614.20/207,245.50
  6. Step 6: Final answer
    x = 162,593.68

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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.