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Finding the Fourth Proportional to 315,408.06, 435,275.37 and 188,080.92

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Solution

The fourth proportional to 315,408.06, 435,275.37 and 188,080.92 is: 259,558.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,408.06 : 435,275.37 = 188,080.92 : x
  2. Step 2: Convert to fraction form
    315,408.06/435,275.37 = 188,080.92/x
  3. Step 3: Cross multiply
    315,408.06x = 435,275.37 × 188,080.92
  4. Step 4: Simplify right side
    315,408.06x = 81,866,992,042.94
  5. Step 5: Solve for x
    x = 81,866,992,042.94/315,408.06
  6. Step 6: Final answer
    x = 259,558.97

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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.