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Finding the Fourth Proportional to 488,814.20, 733,221.30 and 320,852.60

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Solution

The fourth proportional to 488,814.20, 733,221.30 and 320,852.60 is: 481,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,814.20 : 733,221.30 = 320,852.60 : x
  2. Step 2: Convert to fraction form
    488,814.20/733,221.30 = 320,852.60/x
  3. Step 3: Cross multiply
    488,814.20x = 733,221.30 × 320,852.60
  4. Step 4: Simplify right side
    488,814.20x = 235,255,960,480.38
  5. Step 5: Solve for x
    x = 235,255,960,480.38/488,814.20
  6. Step 6: Final answer
    x = 481,278.90

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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.