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Finding the Fourth Proportional to 323,771.35, 485,657.03 and 309,774.55

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Solution

The fourth proportional to 323,771.35, 485,657.03 and 309,774.55 is: 464,661.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,771.35 : 485,657.03 = 309,774.55 : x
  2. Step 2: Convert to fraction form
    323,771.35/485,657.03 = 309,774.55/x
  3. Step 3: Cross multiply
    323,771.35x = 485,657.03 × 309,774.55
  4. Step 4: Simplify right side
    323,771.35x = 150,444,186,373.71
  5. Step 5: Solve for x
    x = 150,444,186,373.71/323,771.35
  6. Step 6: Final answer
    x = 464,661.83

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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.