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Finding the Fourth Proportional to 285,866.78, 394,520.39 and 158,583.38

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Solution

The fourth proportional to 285,866.78, 394,520.39 and 158,583.38 is: 218,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,866.78 : 394,520.39 = 158,583.38 : x
  2. Step 2: Convert to fraction form
    285,866.78/394,520.39 = 158,583.38/x
  3. Step 3: Cross multiply
    285,866.78x = 394,520.39 × 158,583.38
  4. Step 4: Simplify right side
    285,866.78x = 62,564,374,159.60
  5. Step 5: Solve for x
    x = 62,564,374,159.60/285,866.78
  6. Step 6: Final answer
    x = 218,858.50

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1.5x scale

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.