Home / 209,719.20-313,922.70-165,104.40

Finding the Fourth Proportional to 209,719.20, 313,922.70 and 165,104.40

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Solution

The fourth proportional to 209,719.20, 313,922.70 and 165,104.40 is: 247,140.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,719.20 : 313,922.70 = 165,104.40 : x
  2. Step 2: Convert to fraction form
    209,719.20/313,922.70 = 165,104.40/x
  3. Step 3: Cross multiply
    209,719.20x = 313,922.70 × 165,104.40
  4. Step 4: Simplify right side
    209,719.20x = 51,830,019,029.88
  5. Step 5: Solve for x
    x = 51,830,019,029.88/209,719.20
  6. Step 6: Final answer
    x = 247,140.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.