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Finding the Fourth Proportional to 489,018.85, 733,449.59 and 133,949.86

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Solution

The fourth proportional to 489,018.85, 733,449.59 and 133,949.86 is: 200,903.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,018.85 : 733,449.59 = 133,949.86 : x
  2. Step 2: Convert to fraction form
    489,018.85/733,449.59 = 133,949.86/x
  3. Step 3: Cross multiply
    489,018.85x = 733,449.59 × 133,949.86
  4. Step 4: Simplify right side
    489,018.85x = 98,245,467,896.50
  5. Step 5: Solve for x
    x = 98,245,467,896.50/489,018.85
  6. Step 6: Final answer
    x = 200,903.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.