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Finding the Fourth Proportional to 271,485.06, 405,023.17 and 256,788.42

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Solution

The fourth proportional to 271,485.06, 405,023.17 and 256,788.42 is: 383,097.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,485.06 : 405,023.17 = 256,788.42 : x
  2. Step 2: Convert to fraction form
    271,485.06/405,023.17 = 256,788.42/x
  3. Step 3: Cross multiply
    271,485.06x = 405,023.17 × 256,788.42
  4. Step 4: Simplify right side
    271,485.06x = 104,005,259,887.69
  5. Step 5: Solve for x
    x = 104,005,259,887.69/271,485.06
  6. Step 6: Final answer
    x = 383,097.54

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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.