Home / 272,383.72-408,574.21-69,979.60

Finding the Fourth Proportional to 272,383.72, 408,574.21 and 69,979.60

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Solution

The fourth proportional to 272,383.72, 408,574.21 and 69,979.60 is: 104,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,383.72 : 408,574.21 = 69,979.60 : x
  2. Step 2: Convert to fraction form
    272,383.72/408,574.21 = 69,979.60/x
  3. Step 3: Cross multiply
    272,383.72x = 408,574.21 × 69,979.60
  4. Step 4: Simplify right side
    272,383.72x = 28,591,859,786.12
  5. Step 5: Solve for x
    x = 28,591,859,786.12/272,383.72
  6. Step 6: Final answer
    x = 104,969.05

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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.