Home / 209,922.20-314,664.60-115,006.40

Finding the Fourth Proportional to 209,922.20, 314,664.60 and 115,006.40

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Solution

The fourth proportional to 209,922.20, 314,664.60 and 115,006.40 is: 172,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,922.20 : 314,664.60 = 115,006.40 : x
  2. Step 2: Convert to fraction form
    209,922.20/314,664.60 = 115,006.40/x
  3. Step 3: Cross multiply
    209,922.20x = 314,664.60 × 115,006.40
  4. Step 4: Simplify right side
    209,922.20x = 36,188,442,853.44
  5. Step 5: Solve for x
    x = 36,188,442,853.44/209,922.20
  6. Step 6: Final answer
    x = 172,389.78

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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.