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Finding the Fourth Proportional to 315,373.64, 435,272.06 and 188,057.44

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Solution

The fourth proportional to 315,373.64, 435,272.06 and 188,057.44 is: 259,552.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,373.64 : 435,272.06 = 188,057.44 : x
  2. Step 2: Convert to fraction form
    315,373.64/435,272.06 = 188,057.44/x
  3. Step 3: Cross multiply
    315,373.64x = 435,272.06 × 188,057.44
  4. Step 4: Simplify right side
    315,373.64x = 81,856,147,278.66
  5. Step 5: Solve for x
    x = 81,856,147,278.66/315,373.64
  6. Step 6: Final answer
    x = 259,552.91

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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.