Home / 209,422.41-311,765.01-208,176.87

Finding the Fourth Proportional to 209,422.41, 311,765.01 and 208,176.87

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Solution

The fourth proportional to 209,422.41, 311,765.01 and 208,176.87 is: 309,910.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,422.41 : 311,765.01 = 208,176.87 : x
  2. Step 2: Convert to fraction form
    209,422.41/311,765.01 = 208,176.87/x
  3. Step 3: Cross multiply
    209,422.41x = 311,765.01 × 208,176.87
  4. Step 4: Simplify right side
    209,422.41x = 64,902,264,737.98
  5. Step 5: Solve for x
    x = 64,902,264,737.98/209,422.41
  6. Step 6: Final answer
    x = 309,910.79

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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.