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Finding the Fourth Proportional to 315,388.68, 435,243.06 and 179,418.12

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Solution

The fourth proportional to 315,388.68, 435,243.06 and 179,418.12 is: 247,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,388.68 : 435,243.06 = 179,418.12 : x
  2. Step 2: Convert to fraction form
    315,388.68/435,243.06 = 179,418.12/x
  3. Step 3: Cross multiply
    315,388.68x = 435,243.06 × 179,418.12
  4. Step 4: Simplify right side
    315,388.68x = 78,090,491,568.25
  5. Step 5: Solve for x
    x = 78,090,491,568.25/315,388.68
  6. Step 6: Final answer
    x = 247,600.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.