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Finding the Fourth Proportional to 285,775.70, 394,328.25 and 158,452.20

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Solution

The fourth proportional to 285,775.70, 394,328.25 and 158,452.20 is: 218,640.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,775.70 : 394,328.25 = 158,452.20 : x
  2. Step 2: Convert to fraction form
    285,775.70/394,328.25 = 158,452.20/x
  3. Step 3: Cross multiply
    285,775.70x = 394,328.25 × 158,452.20
  4. Step 4: Simplify right side
    285,775.70x = 62,482,178,734.65
  5. Step 5: Solve for x
    x = 62,482,178,734.65/285,775.70
  6. Step 6: Final answer
    x = 218,640.63

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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.