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Finding the Fourth Proportional to 285,893.30, 394,580.01 and 158,609.90

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Solution

The fourth proportional to 285,893.30, 394,580.01 and 158,609.90 is: 218,907.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,893.30 : 394,580.01 = 158,609.90 : x
  2. Step 2: Convert to fraction form
    285,893.30/394,580.01 = 158,609.90/x
  3. Step 3: Cross multiply
    285,893.30x = 394,580.01 × 158,609.90
  4. Step 4: Simplify right side
    285,893.30x = 62,584,293,955.20
  5. Step 5: Solve for x
    x = 62,584,293,955.20/285,893.30
  6. Step 6: Final answer
    x = 218,907.88

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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.