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Finding the Fourth Proportional to 271,021.72, 406,315.50 and 128,795.62

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Solution

The fourth proportional to 271,021.72, 406,315.50 and 128,795.62 is: 193,090.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,021.72 : 406,315.50 = 128,795.62 : x
  2. Step 2: Convert to fraction form
    271,021.72/406,315.50 = 128,795.62/x
  3. Step 3: Cross multiply
    271,021.72x = 406,315.50 × 128,795.62
  4. Step 4: Simplify right side
    271,021.72x = 52,331,656,738.11
  5. Step 5: Solve for x
    x = 52,331,656,738.11/271,021.72
  6. Step 6: Final answer
    x = 193,090.27

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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.