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Finding the Fourth Proportional to 323,884.99, 485,710.83 and 136,911.07

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Solution

The fourth proportional to 323,884.99, 485,710.83 and 136,911.07 is: 205,317.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,884.99 : 485,710.83 = 136,911.07 : x
  2. Step 2: Convert to fraction form
    323,884.99/485,710.83 = 136,911.07/x
  3. Step 3: Cross multiply
    323,884.99x = 485,710.83 × 136,911.07
  4. Step 4: Simplify right side
    323,884.99x = 66,499,189,445.89
  5. Step 5: Solve for x
    x = 66,499,189,445.89/323,884.99
  6. Step 6: Final answer
    x = 205,317.29

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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.