Home / 209,319.60-313,979.40-111,015.60

Finding the Fourth Proportional to 209,319.60, 313,979.40 and 111,015.60

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Solution

The fourth proportional to 209,319.60, 313,979.40 and 111,015.60 is: 166,523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,319.60 : 313,979.40 = 111,015.60 : x
  2. Step 2: Convert to fraction form
    209,319.60/313,979.40 = 111,015.60/x
  3. Step 3: Cross multiply
    209,319.60x = 313,979.40 × 111,015.60
  4. Step 4: Simplify right side
    209,319.60x = 34,856,611,478.64
  5. Step 5: Solve for x
    x = 34,856,611,478.64/209,319.60
  6. Step 6: Final answer
    x = 166,523.40

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1.5x scale

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.