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Finding the Fourth Proportional to 272,979.60, 409,469.40 and 251,984.40

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Solution

The fourth proportional to 272,979.60, 409,469.40 and 251,984.40 is: 377,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,979.60 : 409,469.40 = 251,984.40 : x
  2. Step 2: Convert to fraction form
    272,979.60/409,469.40 = 251,984.40/x
  3. Step 3: Cross multiply
    272,979.60x = 409,469.40 × 251,984.40
  4. Step 4: Simplify right side
    272,979.60x = 103,179,901,077.36
  5. Step 5: Solve for x
    x = 103,179,901,077.36/272,979.60
  6. Step 6: Final answer
    x = 377,976.60

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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.