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Finding the Fourth Proportional to 323,730.85, 485,596.28 and 289,613.65

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Solution

The fourth proportional to 323,730.85, 485,596.28 and 289,613.65 is: 434,420.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,730.85 : 485,596.28 = 289,613.65 : x
  2. Step 2: Convert to fraction form
    323,730.85/485,596.28 = 289,613.65/x
  3. Step 3: Cross multiply
    323,730.85x = 485,596.28 × 289,613.65
  4. Step 4: Simplify right side
    323,730.85x = 140,635,309,629.15
  5. Step 5: Solve for x
    x = 140,635,309,629.15/323,730.85
  6. Step 6: Final answer
    x = 434,420.48

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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.