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Finding the Fourth Proportional to 271,767.26, 405,820.69 and 221,946.20

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Solution

The fourth proportional to 271,767.26, 405,820.69 and 221,946.20 is: 331,424.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,767.26 : 405,820.69 = 221,946.20 : x
  2. Step 2: Convert to fraction form
    271,767.26/405,820.69 = 221,946.20/x
  3. Step 3: Cross multiply
    271,767.26x = 405,820.69 × 221,946.20
  4. Step 4: Simplify right side
    271,767.26x = 90,070,360,026.88
  5. Step 5: Solve for x
    x = 90,070,360,026.88/271,767.26
  6. Step 6: Final answer
    x = 331,424.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.