Home / 315,279.23-435,559.22-206,641.37

Finding the Fourth Proportional to 315,279.23, 435,559.22 and 206,641.37

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Solution

The fourth proportional to 315,279.23, 435,559.22 and 206,641.37 is: 285,475.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,279.23 : 435,559.22 = 206,641.37 : x
  2. Step 2: Convert to fraction form
    315,279.23/435,559.22 = 206,641.37/x
  3. Step 3: Cross multiply
    315,279.23x = 435,559.22 × 206,641.37
  4. Step 4: Simplify right side
    315,279.23x = 90,004,550,725.93
  5. Step 5: Solve for x
    x = 90,004,550,725.93/315,279.23
  6. Step 6: Final answer
    x = 285,475.68

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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.