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Finding the Fourth Proportional to 271,151.92, 406,458.69 and 128,746.90

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Solution

The fourth proportional to 271,151.92, 406,458.69 and 128,746.90 is: 192,992.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,151.92 : 406,458.69 = 128,746.90 : x
  2. Step 2: Convert to fraction form
    271,151.92/406,458.69 = 128,746.90/x
  3. Step 3: Cross multiply
    271,151.92x = 406,458.69 × 128,746.90
  4. Step 4: Simplify right side
    271,151.92x = 52,330,296,315.56
  5. Step 5: Solve for x
    x = 52,330,296,315.56/271,151.92
  6. Step 6: Final answer
    x = 192,992.53

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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.