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Finding the Fourth Proportional to 296,626.72, 444,936.32 and 71,989

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Solution

The fourth proportional to 296,626.72, 444,936.32 and 71,989 is: 107,982.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,626.72 : 444,936.32 = 71,989 : x
  2. Step 2: Convert to fraction form
    296,626.72/444,936.32 = 71,989/x
  3. Step 3: Cross multiply
    296,626.72x = 444,936.32 × 71,989
  4. Step 4: Simplify right side
    296,626.72x = 32,030,520,740.48
  5. Step 5: Solve for x
    x = 32,030,520,740.48/296,626.72
  6. Step 6: Final answer
    x = 107,982.59

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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.