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Finding the Fourth Proportional to 285,899.49, 394,792.11 and 178,652.79

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Solution

The fourth proportional to 285,899.49, 394,792.11 and 178,652.79 is: 246,697.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,899.49 : 394,792.11 = 178,652.79 : x
  2. Step 2: Convert to fraction form
    285,899.49/394,792.11 = 178,652.79/x
  3. Step 3: Cross multiply
    285,899.49x = 394,792.11 × 178,652.79
  4. Step 4: Simplify right side
    285,899.49x = 70,530,711,921.49
  5. Step 5: Solve for x
    x = 70,530,711,921.49/285,899.49
  6. Step 6: Final answer
    x = 246,697.58

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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.