Home / 209,980.88-289,538.20-171,621.37

Finding the Fourth Proportional to 209,980.88, 289,538.20 and 171,621.37

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Solution

The fourth proportional to 209,980.88, 289,538.20 and 171,621.37 is: 236,645.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,980.88 : 289,538.20 = 171,621.37 : x
  2. Step 2: Convert to fraction form
    209,980.88/289,538.20 = 171,621.37/x
  3. Step 3: Cross multiply
    209,980.88x = 289,538.20 × 171,621.37
  4. Step 4: Simplify right side
    209,980.88x = 49,690,942,551.33
  5. Step 5: Solve for x
    x = 49,690,942,551.33/209,980.88
  6. Step 6: Final answer
    x = 236,645.08

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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.