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Finding the Fourth Proportional to 285,594.85, 394,136.58 and 158,267.71

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Solution

The fourth proportional to 285,594.85, 394,136.58 and 158,267.71 is: 218,418.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,594.85 : 394,136.58 = 158,267.71 : x
  2. Step 2: Convert to fraction form
    285,594.85/394,136.58 = 158,267.71/x
  3. Step 3: Cross multiply
    285,594.85x = 394,136.58 × 158,267.71
  4. Step 4: Simplify right side
    285,594.85x = 62,379,093,943.83
  5. Step 5: Solve for x
    x = 62,379,093,943.83/285,594.85
  6. Step 6: Final answer
    x = 218,418.13

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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.