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Finding the Fourth Proportional to 318,906.20, 478,359.30 and 244,256.60

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Solution

The fourth proportional to 318,906.20, 478,359.30 and 244,256.60 is: 366,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,906.20 : 478,359.30 = 244,256.60 : x
  2. Step 2: Convert to fraction form
    318,906.20/478,359.30 = 244,256.60/x
  3. Step 3: Cross multiply
    318,906.20x = 478,359.30 × 244,256.60
  4. Step 4: Simplify right side
    318,906.20x = 116,842,416,196.38
  5. Step 5: Solve for x
    x = 116,842,416,196.38/318,906.20
  6. Step 6: Final answer
    x = 366,384.90

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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.