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Finding the Fourth Proportional to 438,879.57, 658,483.38 and 172,825.55

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Solution

The fourth proportional to 438,879.57, 658,483.38 and 172,825.55 is: 259,302.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,879.57 : 658,483.38 = 172,825.55 : x
  2. Step 2: Convert to fraction form
    438,879.57/658,483.38 = 172,825.55/x
  3. Step 3: Cross multiply
    438,879.57x = 658,483.38 × 172,825.55
  4. Step 4: Simplify right side
    438,879.57x = 113,802,752,314.36
  5. Step 5: Solve for x
    x = 113,802,752,314.36/438,879.57
  6. Step 6: Final answer
    x = 259,302.92

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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.