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Finding the Fourth Proportional to 488,810.20, 733,215.30 and 320,848.60

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Solution

The fourth proportional to 488,810.20, 733,215.30 and 320,848.60 is: 481,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,810.20 : 733,215.30 = 320,848.60 : x
  2. Step 2: Convert to fraction form
    488,810.20/733,215.30 = 320,848.60/x
  3. Step 3: Cross multiply
    488,810.20x = 733,215.30 × 320,848.60
  4. Step 4: Simplify right side
    488,810.20x = 235,251,102,503.58
  5. Step 5: Solve for x
    x = 235,251,102,503.58/488,810.20
  6. Step 6: Final answer
    x = 481,272.90

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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.