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Finding the Fourth Proportional to 207,939.60, 287,034.42 and 161,908.24

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Solution

The fourth proportional to 207,939.60, 287,034.42 and 161,908.24 is: 223,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,939.60 : 287,034.42 = 161,908.24 : x
  2. Step 2: Convert to fraction form
    207,939.60/287,034.42 = 161,908.24/x
  3. Step 3: Cross multiply
    207,939.60x = 287,034.42 × 161,908.24
  4. Step 4: Simplify right side
    207,939.60x = 46,473,237,761.62
  5. Step 5: Solve for x
    x = 46,473,237,761.62/207,939.60
  6. Step 6: Final answer
    x = 223,493.93

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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.