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Finding the Fourth Proportional to 207,954.80, 311,494.80 and 172,962.80

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Solution

The fourth proportional to 207,954.80, 311,494.80 and 172,962.80 is: 259,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,954.80 : 311,494.80 = 172,962.80 : x
  2. Step 2: Convert to fraction form
    207,954.80/311,494.80 = 172,962.80/x
  3. Step 3: Cross multiply
    207,954.80x = 311,494.80 × 172,962.80
  4. Step 4: Simplify right side
    207,954.80x = 53,877,012,793.44
  5. Step 5: Solve for x
    x = 53,877,012,793.44/207,954.80
  6. Step 6: Final answer
    x = 259,080.40

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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.