Home / 209,400.32-288,991.17-123,360.09

Finding the Fourth Proportional to 209,400.32, 288,991.17 and 123,360.09

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Solution

The fourth proportional to 209,400.32, 288,991.17 and 123,360.09 is: 170,247.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,400.32 : 288,991.17 = 123,360.09 : x
  2. Step 2: Convert to fraction form
    209,400.32/288,991.17 = 123,360.09/x
  3. Step 3: Cross multiply
    209,400.32x = 288,991.17 × 123,360.09
  4. Step 4: Simplify right side
    209,400.32x = 35,649,976,740.41
  5. Step 5: Solve for x
    x = 35,649,976,740.41/209,400.32
  6. Step 6: Final answer
    x = 170,247.96

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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.