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Finding the Fourth Proportional to 203,440.40, 305,160.60 and 63,213.20

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Solution

The fourth proportional to 203,440.40, 305,160.60 and 63,213.20 is: 94,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,440.40 : 305,160.60 = 63,213.20 : x
  2. Step 2: Convert to fraction form
    203,440.40/305,160.60 = 63,213.20/x
  3. Step 3: Cross multiply
    203,440.40x = 305,160.60 × 63,213.20
  4. Step 4: Simplify right side
    203,440.40x = 19,290,178,039.92
  5. Step 5: Solve for x
    x = 19,290,178,039.92/203,440.40
  6. Step 6: Final answer
    x = 94,819.80

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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.