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Finding the Fourth Proportional to 462,879.22, 638,743.20 and 258,894.80

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Solution

The fourth proportional to 462,879.22, 638,743.20 and 258,894.80 is: 357,257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,879.22 : 638,743.20 = 258,894.80 : x
  2. Step 2: Convert to fraction form
    462,879.22/638,743.20 = 258,894.80/x
  3. Step 3: Cross multiply
    462,879.22x = 638,743.20 × 258,894.80
  4. Step 4: Simplify right side
    462,879.22x = 165,367,289,821.64
  5. Step 5: Solve for x
    x = 165,367,289,821.64/462,879.22
  6. Step 6: Final answer
    x = 357,257.97

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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.