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Finding the Fourth Proportional to 628,446.44, 942,817.31 and 207,722.32

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Solution

The fourth proportional to 628,446.44, 942,817.31 and 207,722.32 is: 311,632.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,446.44 : 942,817.31 = 207,722.32 : x
  2. Step 2: Convert to fraction form
    628,446.44/942,817.31 = 207,722.32/x
  3. Step 3: Cross multiply
    628,446.44x = 942,817.31 × 207,722.32
  4. Step 4: Simplify right side
    628,446.44x = 195,844,198,969.36
  5. Step 5: Solve for x
    x = 195,844,198,969.36/628,446.44
  6. Step 6: Final answer
    x = 311,632.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.