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Finding the Fourth Proportional to 323,743.30, 485,730.15 and 312,223.30

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Solution

The fourth proportional to 323,743.30, 485,730.15 and 312,223.30 is: 468,446.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,743.30 : 485,730.15 = 312,223.30 : x
  2. Step 2: Convert to fraction form
    323,743.30/485,730.15 = 312,223.30/x
  3. Step 3: Cross multiply
    323,743.30x = 485,730.15 × 312,223.30
  4. Step 4: Simplify right side
    323,743.30x = 151,656,270,342.50
  5. Step 5: Solve for x
    x = 151,656,270,342.50/323,743.30
  6. Step 6: Final answer
    x = 468,446.05

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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.