Home / 285,930.78-394,631.80-158,647.38

Finding the Fourth Proportional to 285,930.78, 394,631.80 and 158,647.38

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Solution

The fourth proportional to 285,930.78, 394,631.80 and 158,647.38 is: 218,959.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,930.78 : 394,631.80 = 158,647.38 : x
  2. Step 2: Convert to fraction form
    285,930.78/394,631.80 = 158,647.38/x
  3. Step 3: Cross multiply
    285,930.78x = 394,631.80 × 158,647.38
  4. Step 4: Simplify right side
    285,930.78x = 62,607,301,134.68
  5. Step 5: Solve for x
    x = 62,607,301,134.68/285,930.78
  6. Step 6: Final answer
    x = 218,959.64

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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.