Home / 421,949.14-582,290.67-230,974.72

Finding the Fourth Proportional to 421,949.14, 582,290.67 and 230,974.72

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Solution

The fourth proportional to 421,949.14, 582,290.67 and 230,974.72 is: 318,745.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,949.14 : 582,290.67 = 230,974.72 : x
  2. Step 2: Convert to fraction form
    421,949.14/582,290.67 = 230,974.72/x
  3. Step 3: Cross multiply
    421,949.14x = 582,290.67 × 230,974.72
  4. Step 4: Simplify right side
    421,949.14x = 134,494,424,461.86
  5. Step 5: Solve for x
    x = 134,494,424,461.86/421,949.14
  6. Step 6: Final answer
    x = 318,745.58

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Half scale
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Double scale
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Similar ratio
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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.