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Finding the Fourth Proportional to 207,912.66, 286,902.96 and 117,239.64

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Solution

The fourth proportional to 207,912.66, 286,902.96 and 117,239.64 is: 161,781.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,912.66 : 286,902.96 = 117,239.64 : x
  2. Step 2: Convert to fraction form
    207,912.66/286,902.96 = 117,239.64/x
  3. Step 3: Cross multiply
    207,912.66x = 286,902.96 × 117,239.64
  4. Step 4: Simplify right side
    207,912.66x = 33,636,398,889.27
  5. Step 5: Solve for x
    x = 33,636,398,889.27/207,912.66
  6. Step 6: Final answer
    x = 161,781.39

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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.