Home / 272,940.20-408,972.90-172,921.40

Finding the Fourth Proportional to 272,940.20, 408,972.90 and 172,921.40

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Solution

The fourth proportional to 272,940.20, 408,972.90 and 172,921.40 is: 259,104.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,940.20 : 408,972.90 = 172,921.40 : x
  2. Step 2: Convert to fraction form
    272,940.20/408,972.90 = 172,921.40/x
  3. Step 3: Cross multiply
    272,940.20x = 408,972.90 × 172,921.40
  4. Step 4: Simplify right side
    272,940.20x = 70,720,166,430.06
  5. Step 5: Solve for x
    x = 70,720,166,430.06/272,940.20
  6. Step 6: Final answer
    x = 259,104.99

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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.