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Finding the Fourth Proportional to 285,918.95, 394,568.54 and 158,594.54

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Solution

The fourth proportional to 285,918.95, 394,568.54 and 158,594.54 is: 218,860.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,918.95 : 394,568.54 = 158,594.54 : x
  2. Step 2: Convert to fraction form
    285,918.95/394,568.54 = 158,594.54/x
  3. Step 3: Cross multiply
    285,918.95x = 394,568.54 × 158,594.54
  4. Step 4: Simplify right side
    285,918.95x = 62,576,413,333.96
  5. Step 5: Solve for x
    x = 62,576,413,333.96/285,918.95
  6. Step 6: Final answer
    x = 218,860.68

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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.