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Finding the Fourth Proportional to 323,730.90, 485,596.35 and 321,657.30

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Solution

The fourth proportional to 323,730.90, 485,596.35 and 321,657.30 is: 482,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,730.90 : 485,596.35 = 321,657.30 : x
  2. Step 2: Convert to fraction form
    323,730.90/485,596.35 = 321,657.30/x
  3. Step 3: Cross multiply
    323,730.90x = 485,596.35 × 321,657.30
  4. Step 4: Simplify right side
    323,730.90x = 156,195,610,830.86
  5. Step 5: Solve for x
    x = 156,195,610,830.86/323,730.90
  6. Step 6: Final answer
    x = 482,485.95

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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.