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Finding the Fourth Proportional to 438,190.86, 657,371.51 and 168,299.26

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Solution

The fourth proportional to 438,190.86, 657,371.51 and 168,299.26 is: 252,481.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,190.86 : 657,371.51 = 168,299.26 : x
  2. Step 2: Convert to fraction form
    438,190.86/657,371.51 = 168,299.26/x
  3. Step 3: Cross multiply
    438,190.86x = 657,371.51 × 168,299.26
  4. Step 4: Simplify right side
    438,190.86x = 110,635,137,985.38
  5. Step 5: Solve for x
    x = 110,635,137,985.38/438,190.86
  6. Step 6: Final answer
    x = 252,481.62

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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.