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Finding the Fourth Proportional to 272,636.38, 408,623 and 145,965.34

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Solution

The fourth proportional to 272,636.38, 408,623 and 145,965.34 is: 218,770.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,636.38 : 408,623 = 145,965.34 : x
  2. Step 2: Convert to fraction form
    272,636.38/408,623 = 145,965.34/x
  3. Step 3: Cross multiply
    272,636.38x = 408,623 × 145,965.34
  4. Step 4: Simplify right side
    272,636.38x = 59,644,795,126.82
  5. Step 5: Solve for x
    x = 59,644,795,126.82/272,636.38
  6. Step 6: Final answer
    x = 218,770.49

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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.