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Finding the Fourth Proportional to 323,636.34, 485,011.17 and 205,390.65

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Solution

The fourth proportional to 323,636.34, 485,011.17 and 205,390.65 is: 307,804.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,636.34 : 485,011.17 = 205,390.65 : x
  2. Step 2: Convert to fraction form
    323,636.34/485,011.17 = 205,390.65/x
  3. Step 3: Cross multiply
    323,636.34x = 485,011.17 × 205,390.65
  4. Step 4: Simplify right side
    323,636.34x = 99,616,759,463.56
  5. Step 5: Solve for x
    x = 99,616,759,463.56/323,636.34
  6. Step 6: Final answer
    x = 307,804.62

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1.5x scale

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.