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Finding the Fourth Proportional to 315,789.39, 436,080.39 and 202,808.97

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Solution

The fourth proportional to 315,789.39, 436,080.39 and 202,808.97 is: 280,063.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,789.39 : 436,080.39 = 202,808.97 : x
  2. Step 2: Convert to fraction form
    315,789.39/436,080.39 = 202,808.97/x
  3. Step 3: Cross multiply
    315,789.39x = 436,080.39 × 202,808.97
  4. Step 4: Simplify right side
    315,789.39x = 88,441,014,733.10
  5. Step 5: Solve for x
    x = 88,441,014,733.10/315,789.39
  6. Step 6: Final answer
    x = 280,063.29

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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.