Home / 209,392.14-311,720.06-208,146.57

Finding the Fourth Proportional to 209,392.14, 311,720.06 and 208,146.57

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Solution

The fourth proportional to 209,392.14, 311,720.06 and 208,146.57 is: 309,865.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,392.14 : 311,720.06 = 208,146.57 : x
  2. Step 2: Convert to fraction form
    209,392.14/311,720.06 = 208,146.57/x
  3. Step 3: Cross multiply
    209,392.14x = 311,720.06 × 208,146.57
  4. Step 4: Simplify right side
    209,392.14x = 64,883,458,689.86
  5. Step 5: Solve for x
    x = 64,883,458,689.86/209,392.14
  6. Step 6: Final answer
    x = 309,865.79

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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.