Home / 438,939.48-658,685.99-172,665.39

Finding the Fourth Proportional to 438,939.48, 658,685.99 and 172,665.39

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Solution

The fourth proportional to 438,939.48, 658,685.99 and 172,665.39 is: 259,106.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,939.48 : 658,685.99 = 172,665.39 : x
  2. Step 2: Convert to fraction form
    438,939.48/658,685.99 = 172,665.39/x
  3. Step 3: Cross multiply
    438,939.48x = 658,685.99 × 172,665.39
  4. Step 4: Simplify right side
    438,939.48x = 113,732,273,350.89
  5. Step 5: Solve for x
    x = 113,732,273,350.89/438,939.48
  6. Step 6: Final answer
    x = 259,106.96

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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.