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Finding the Fourth Proportional to 438,937.72, 658,683.38 and 172,663.64

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Solution

The fourth proportional to 438,937.72, 658,683.38 and 172,663.64 is: 259,104.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,937.72 : 658,683.38 = 172,663.64 : x
  2. Step 2: Convert to fraction form
    438,937.72/658,683.38 = 172,663.64/x
  3. Step 3: Cross multiply
    438,937.72x = 658,683.38 × 172,663.64
  4. Step 4: Simplify right side
    438,937.72x = 113,730,669,998.30
  5. Step 5: Solve for x
    x = 113,730,669,998.30/438,937.72
  6. Step 6: Final answer
    x = 259,104.34

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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.