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Finding the Fourth Proportional to 485,489.75, 669,977.42 and 264,725.42

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Solution

The fourth proportional to 485,489.75, 669,977.42 and 264,725.42 is: 365,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,489.75 : 669,977.42 = 264,725.42 : x
  2. Step 2: Convert to fraction form
    485,489.75/669,977.42 = 264,725.42/x
  3. Step 3: Cross multiply
    485,489.75x = 669,977.42 × 264,725.42
  4. Step 4: Simplify right side
    485,489.75x = 177,360,049,226.50
  5. Step 5: Solve for x
    x = 177,360,049,226.50/485,489.75
  6. Step 6: Final answer
    x = 365,321.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.