Home / 209,079.20-313,618.80-51,305.60

Finding the Fourth Proportional to 209,079.20, 313,618.80 and 51,305.60

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Solution

The fourth proportional to 209,079.20, 313,618.80 and 51,305.60 is: 76,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,079.20 : 313,618.80 = 51,305.60 : x
  2. Step 2: Convert to fraction form
    209,079.20/313,618.80 = 51,305.60/x
  3. Step 3: Cross multiply
    209,079.20x = 313,618.80 × 51,305.60
  4. Step 4: Simplify right side
    209,079.20x = 16,090,400,705.28
  5. Step 5: Solve for x
    x = 16,090,400,705.28/209,079.20
  6. Step 6: Final answer
    x = 76,958.40

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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.