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Finding the Fourth Proportional to 323,801.10, 485,701.65 and 298,917.90

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Solution

The fourth proportional to 323,801.10, 485,701.65 and 298,917.90 is: 448,376.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,801.10 : 485,701.65 = 298,917.90 : x
  2. Step 2: Convert to fraction form
    323,801.10/485,701.65 = 298,917.90/x
  3. Step 3: Cross multiply
    323,801.10x = 485,701.65 × 298,917.90
  4. Step 4: Simplify right side
    323,801.10x = 145,184,917,244.54
  5. Step 5: Solve for x
    x = 145,184,917,244.54/323,801.10
  6. Step 6: Final answer
    x = 448,376.85

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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.