Home / 209,725.20-313,931.70-165,110.40

Finding the Fourth Proportional to 209,725.20, 313,931.70 and 165,110.40

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Solution

The fourth proportional to 209,725.20, 313,931.70 and 165,110.40 is: 247,149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,725.20 : 313,931.70 = 165,110.40 : x
  2. Step 2: Convert to fraction form
    209,725.20/313,931.70 = 165,110.40/x
  3. Step 3: Cross multiply
    209,725.20x = 313,931.70 × 165,110.40
  4. Step 4: Simplify right side
    209,725.20x = 51,833,388,559.68
  5. Step 5: Solve for x
    x = 51,833,388,559.68/209,725.20
  6. Step 6: Final answer
    x = 247,149.07

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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.