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Finding the Fourth Proportional to 323,983.85, 485,975.78 and 205,740.05

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Solution

The fourth proportional to 323,983.85, 485,975.78 and 205,740.05 is: 308,610.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,983.85 : 485,975.78 = 205,740.05 : x
  2. Step 2: Convert to fraction form
    323,983.85/485,975.78 = 205,740.05/x
  3. Step 3: Cross multiply
    323,983.85x = 485,975.78 × 205,740.05
  4. Step 4: Simplify right side
    323,983.85x = 99,984,680,247.29
  5. Step 5: Solve for x
    x = 99,984,680,247.29/323,983.85
  6. Step 6: Final answer
    x = 308,610.08

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Similar ratio
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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.