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Finding the Fourth Proportional to 485,514.15, 728,271.23 and 219,793.65

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Solution

The fourth proportional to 485,514.15, 728,271.23 and 219,793.65 is: 329,690.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,514.15 : 728,271.23 = 219,793.65 : x
  2. Step 2: Convert to fraction form
    485,514.15/728,271.23 = 219,793.65/x
  3. Step 3: Cross multiply
    485,514.15x = 728,271.23 × 219,793.65
  4. Step 4: Simplify right side
    485,514.15x = 160,069,390,732.72
  5. Step 5: Solve for x
    x = 160,069,390,732.72/485,514.15
  6. Step 6: Final answer
    x = 329,690.48

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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.