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Finding the Fourth Proportional to 323,486.90, 485,317.69 and 98,841.17

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Solution

The fourth proportional to 323,486.90, 485,317.69 and 98,841.17 is: 148,288.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,486.90 : 485,317.69 = 98,841.17 : x
  2. Step 2: Convert to fraction form
    323,486.90/485,317.69 = 98,841.17/x
  3. Step 3: Cross multiply
    323,486.90x = 485,317.69 × 98,841.17
  4. Step 4: Simplify right side
    323,486.90x = 47,969,365,380.50
  5. Step 5: Solve for x
    x = 47,969,365,380.50/323,486.90
  6. Step 6: Final answer
    x = 148,288.43

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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.