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Finding the Fourth Proportional to 285,565.60, 394,079.46 and 158,241.09

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Solution

The fourth proportional to 285,565.60, 394,079.46 and 158,241.09 is: 218,372.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,565.60 : 394,079.46 = 158,241.09 : x
  2. Step 2: Convert to fraction form
    285,565.60/394,079.46 = 158,241.09/x
  3. Step 3: Cross multiply
    285,565.60x = 394,079.46 × 158,241.09
  4. Step 4: Simplify right side
    285,565.60x = 62,359,563,297.01
  5. Step 5: Solve for x
    x = 62,359,563,297.01/285,565.60
  6. Step 6: Final answer
    x = 218,372.12

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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.