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Finding the Fourth Proportional to 207,982.70, 287,016.06 and 112,489.37

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Solution

The fourth proportional to 207,982.70, 287,016.06 and 112,489.37 is: 155,235.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,982.70 : 287,016.06 = 112,489.37 : x
  2. Step 2: Convert to fraction form
    207,982.70/287,016.06 = 112,489.37/x
  3. Step 3: Cross multiply
    207,982.70x = 287,016.06 × 112,489.37
  4. Step 4: Simplify right side
    207,982.70x = 32,286,254,334.20
  5. Step 5: Solve for x
    x = 32,286,254,334.20/207,982.70
  6. Step 6: Final answer
    x = 155,235.29

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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.