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Finding the Fourth Proportional to 272,475.54, 408,708.54 and 122,609.76

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Solution

The fourth proportional to 272,475.54, 408,708.54 and 122,609.76 is: 183,912.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,475.54 : 408,708.54 = 122,609.76 : x
  2. Step 2: Convert to fraction form
    272,475.54/408,708.54 = 122,609.76/x
  3. Step 3: Cross multiply
    272,475.54x = 408,708.54 × 122,609.76
  4. Step 4: Simplify right side
    272,475.54x = 50,111,655,999.35
  5. Step 5: Solve for x
    x = 50,111,655,999.35/272,475.54
  6. Step 6: Final answer
    x = 183,912.49

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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.