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Finding the Fourth Proportional to 272,495.52, 408,738.52 and 122,629.76

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Solution

The fourth proportional to 272,495.52, 408,738.52 and 122,629.76 is: 183,942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,495.52 : 408,738.52 = 122,629.76 : x
  2. Step 2: Convert to fraction form
    272,495.52/408,738.52 = 122,629.76/x
  3. Step 3: Cross multiply
    272,495.52x = 408,738.52 × 122,629.76
  4. Step 4: Simplify right side
    272,495.52x = 50,123,506,610.36
  5. Step 5: Solve for x
    x = 50,123,506,610.36/272,495.52
  6. Step 6: Final answer
    x = 183,942.50

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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.