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Finding the Fourth Proportional to 323,539.20, 485,308.80 and 181,821.60

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Solution

The fourth proportional to 323,539.20, 485,308.80 and 181,821.60 is: 272,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,539.20 : 485,308.80 = 181,821.60 : x
  2. Step 2: Convert to fraction form
    323,539.20/485,308.80 = 181,821.60/x
  3. Step 3: Cross multiply
    323,539.20x = 485,308.80 × 181,821.60
  4. Step 4: Simplify right side
    323,539.20x = 88,239,622,510.08
  5. Step 5: Solve for x
    x = 88,239,622,510.08/323,539.20
  6. Step 6: Final answer
    x = 272,732.40

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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.