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Finding the Fourth Proportional to 272,394.40, 408,073.20 and 161,456.80

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Solution

The fourth proportional to 272,394.40, 408,073.20 and 161,456.80 is: 241,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,394.40 : 408,073.20 = 161,456.80 : x
  2. Step 2: Convert to fraction form
    272,394.40/408,073.20 = 161,456.80/x
  3. Step 3: Cross multiply
    272,394.40x = 408,073.20 × 161,456.80
  4. Step 4: Simplify right side
    272,394.40x = 65,886,193,037.76
  5. Step 5: Solve for x
    x = 65,886,193,037.76/272,394.40
  6. Step 6: Final answer
    x = 241,877.93

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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.