Home / 209,320.20-313,883.10-90,930.60

Finding the Fourth Proportional to 209,320.20, 313,883.10 and 90,930.60

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Solution

The fourth proportional to 209,320.20, 313,883.10 and 90,930.60 is: 136,353.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,320.20 : 313,883.10 = 90,930.60 : x
  2. Step 2: Convert to fraction form
    209,320.20/313,883.10 = 90,930.60/x
  3. Step 3: Cross multiply
    209,320.20x = 313,883.10 × 90,930.60
  4. Step 4: Simplify right side
    209,320.20x = 28,541,578,612.86
  5. Step 5: Solve for x
    x = 28,541,578,612.86/209,320.20
  6. Step 6: Final answer
    x = 136,353.68

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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.