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Finding the Fourth Proportional to 323,627.10, 485,440.65 and 211,652.70

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Solution

The fourth proportional to 323,627.10, 485,440.65 and 211,652.70 is: 317,479.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,627.10 : 485,440.65 = 211,652.70 : x
  2. Step 2: Convert to fraction form
    323,627.10/485,440.65 = 211,652.70/x
  3. Step 3: Cross multiply
    323,627.10x = 485,440.65 × 211,652.70
  4. Step 4: Simplify right side
    323,627.10x = 102,744,824,262.26
  5. Step 5: Solve for x
    x = 102,744,824,262.26/323,627.10
  6. Step 6: Final answer
    x = 317,479.05

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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.