Home / 209,323.20-313,887.60-90,933.60

Finding the Fourth Proportional to 209,323.20, 313,887.60 and 90,933.60

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Solution

The fourth proportional to 209,323.20, 313,887.60 and 90,933.60 is: 136,358.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,323.20 : 313,887.60 = 90,933.60 : x
  2. Step 2: Convert to fraction form
    209,323.20/313,887.60 = 90,933.60/x
  3. Step 3: Cross multiply
    209,323.20x = 313,887.60 × 90,933.60
  4. Step 4: Simplify right side
    209,323.20x = 28,542,929,463.36
  5. Step 5: Solve for x
    x = 28,542,929,463.36/209,323.20
  6. Step 6: Final answer
    x = 136,358.17

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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.