Home / 272,619.14-408,945.05-85,630.64

Finding the Fourth Proportional to 272,619.14, 408,945.05 and 85,630.64

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Solution

The fourth proportional to 272,619.14, 408,945.05 and 85,630.64 is: 128,451.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,619.14 : 408,945.05 = 85,630.64 : x
  2. Step 2: Convert to fraction form
    272,619.14/408,945.05 = 85,630.64/x
  3. Step 3: Cross multiply
    272,619.14x = 408,945.05 × 85,630.64
  4. Step 4: Simplify right side
    272,619.14x = 35,018,226,356.33
  5. Step 5: Solve for x
    x = 35,018,226,356.33/272,619.14
  6. Step 6: Final answer
    x = 128,451.09

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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.