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Finding the Fourth Proportional to 323,539.30, 485,310.14 and 98,898.86

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Solution

The fourth proportional to 323,539.30, 485,310.14 and 98,898.86 is: 148,348.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,539.30 : 485,310.14 = 98,898.86 : x
  2. Step 2: Convert to fraction form
    323,539.30/485,310.14 = 98,898.86/x
  3. Step 3: Cross multiply
    323,539.30x = 485,310.14 × 98,898.86
  4. Step 4: Simplify right side
    323,539.30x = 47,996,617,884.67
  5. Step 5: Solve for x
    x = 47,996,617,884.67/323,539.30
  6. Step 6: Final answer
    x = 148,348.65

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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.