Home / 209,622.20-289,274.09-122,422.30

Finding the Fourth Proportional to 209,622.20, 289,274.09 and 122,422.30

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Solution

The fourth proportional to 209,622.20, 289,274.09 and 122,422.30 is: 168,940.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,622.20 : 289,274.09 = 122,422.30 : x
  2. Step 2: Convert to fraction form
    209,622.20/289,274.09 = 122,422.30/x
  3. Step 3: Cross multiply
    209,622.20x = 289,274.09 × 122,422.30
  4. Step 4: Simplify right side
    209,622.20x = 35,413,599,428.21
  5. Step 5: Solve for x
    x = 35,413,599,428.21/209,622.20
  6. Step 6: Final answer
    x = 168,940.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.