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Finding the Fourth Proportional to 207,504.20, 311,256.30 and 172,512.20

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Solution

The fourth proportional to 207,504.20, 311,256.30 and 172,512.20 is: 258,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,504.20 : 311,256.30 = 172,512.20 : x
  2. Step 2: Convert to fraction form
    207,504.20/311,256.30 = 172,512.20/x
  3. Step 3: Cross multiply
    207,504.20x = 311,256.30 × 172,512.20
  4. Step 4: Simplify right side
    207,504.20x = 53,695,509,076.86
  5. Step 5: Solve for x
    x = 53,695,509,076.86/207,504.20
  6. Step 6: Final answer
    x = 258,768.30

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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.