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Finding the Fourth Proportional to 271,851.60, 407,388.60 and 200,215.20

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Solution

The fourth proportional to 271,851.60, 407,388.60 and 200,215.20 is: 300,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,851.60 : 407,388.60 = 200,215.20 : x
  2. Step 2: Convert to fraction form
    271,851.60/407,388.60 = 200,215.20/x
  3. Step 3: Cross multiply
    271,851.60x = 407,388.60 × 200,215.20
  4. Step 4: Simplify right side
    271,851.60x = 81,565,390,026.72
  5. Step 5: Solve for x
    x = 81,565,390,026.72/271,851.60
  6. Step 6: Final answer
    x = 300,036.45

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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.