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Finding the Fourth Proportional to 323,830.62, 485,778.33 and 99,188.46

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Solution

The fourth proportional to 323,830.62, 485,778.33 and 99,188.46 is: 148,792.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,830.62 : 485,778.33 = 99,188.46 : x
  2. Step 2: Convert to fraction form
    323,830.62/485,778.33 = 99,188.46/x
  3. Step 3: Cross multiply
    323,830.62x = 485,778.33 × 99,188.46
  4. Step 4: Simplify right side
    323,830.62x = 48,183,604,454.07
  5. Step 5: Solve for x
    x = 48,183,604,454.07/323,830.62
  6. Step 6: Final answer
    x = 148,792.61

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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.