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Finding the Fourth Proportional to 383,640.40, 575,244.60 and 146,990.80

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Solution

The fourth proportional to 383,640.40, 575,244.60 and 146,990.80 is: 220,403.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,640.40 : 575,244.60 = 146,990.80 : x
  2. Step 2: Convert to fraction form
    383,640.40/575,244.60 = 146,990.80/x
  3. Step 3: Cross multiply
    383,640.40x = 575,244.60 × 146,990.80
  4. Step 4: Simplify right side
    383,640.40x = 84,555,663,949.68
  5. Step 5: Solve for x
    x = 84,555,663,949.68/383,640.40
  6. Step 6: Final answer
    x = 220,403.44

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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.