Home / 308,131.48-425,205.90-172,138.42

Finding the Fourth Proportional to 308,131.48, 425,205.90 and 172,138.42

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Solution

The fourth proportional to 308,131.48, 425,205.90 and 172,138.42 is: 237,542.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,131.48 : 425,205.90 = 172,138.42 : x
  2. Step 2: Convert to fraction form
    308,131.48/425,205.90 = 172,138.42/x
  3. Step 3: Cross multiply
    308,131.48x = 425,205.90 × 172,138.42
  4. Step 4: Simplify right side
    308,131.48x = 73,194,271,800.68
  5. Step 5: Solve for x
    x = 73,194,271,800.68/308,131.48
  6. Step 6: Final answer
    x = 237,542.34

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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.