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Finding the Fourth Proportional to 485,704.10, 728,556.15 and 236,872.10

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Solution

The fourth proportional to 485,704.10, 728,556.15 and 236,872.10 is: 355,308.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,704.10 : 728,556.15 = 236,872.10 : x
  2. Step 2: Convert to fraction form
    485,704.10/728,556.15 = 236,872.10/x
  3. Step 3: Cross multiply
    485,704.10x = 728,556.15 × 236,872.10
  4. Step 4: Simplify right side
    485,704.10x = 172,574,625,218.42
  5. Step 5: Solve for x
    x = 172,574,625,218.42/485,704.10
  6. Step 6: Final answer
    x = 355,308.15

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Similar ratio
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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.