Home / 209,945.20-314,917.80-191,574.40

Finding the Fourth Proportional to 209,945.20, 314,917.80 and 191,574.40

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Solution

The fourth proportional to 209,945.20, 314,917.80 and 191,574.40 is: 287,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,945.20 : 314,917.80 = 191,574.40 : x
  2. Step 2: Convert to fraction form
    209,945.20/314,917.80 = 191,574.40/x
  3. Step 3: Cross multiply
    209,945.20x = 314,917.80 × 191,574.40
  4. Step 4: Simplify right side
    209,945.20x = 60,330,188,584.32
  5. Step 5: Solve for x
    x = 60,330,188,584.32/209,945.20
  6. Step 6: Final answer
    x = 287,361.60

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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.