Home / 209,421.92-311,764.26-208,176.36

Finding the Fourth Proportional to 209,421.92, 311,764.26 and 208,176.36

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Solution

The fourth proportional to 209,421.92, 311,764.26 and 208,176.36 is: 309,910.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,421.92 : 311,764.26 = 208,176.36 : x
  2. Step 2: Convert to fraction form
    209,421.92/311,764.26 = 208,176.36/x
  3. Step 3: Cross multiply
    209,421.92x = 311,764.26 × 208,176.36
  4. Step 4: Simplify right side
    209,421.92x = 64,901,948,824.89
  5. Step 5: Solve for x
    x = 64,901,948,824.89/209,421.92
  6. Step 6: Final answer
    x = 309,910.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.