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Finding the Fourth Proportional to 272,040.40, 408,194.70 and 122,386.60

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Solution

The fourth proportional to 272,040.40, 408,194.70 and 122,386.60 is: 183,640.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,040.40 : 408,194.70 = 122,386.60 : x
  2. Step 2: Convert to fraction form
    272,040.40/408,194.70 = 122,386.60/x
  3. Step 3: Cross multiply
    272,040.40x = 408,194.70 × 122,386.60
  4. Step 4: Simplify right side
    272,040.40x = 49,957,561,471.02
  5. Step 5: Solve for x
    x = 49,957,561,471.02/272,040.40
  6. Step 6: Final answer
    x = 183,640.23

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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.