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Finding the Fourth Proportional to 481,956.52, 665,090.42 and 290,977.96

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Solution

The fourth proportional to 481,956.52, 665,090.42 and 290,977.96 is: 401,543.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,956.52 : 665,090.42 = 290,977.96 : x
  2. Step 2: Convert to fraction form
    481,956.52/665,090.42 = 290,977.96/x
  3. Step 3: Cross multiply
    481,956.52x = 665,090.42 × 290,977.96
  4. Step 4: Simplify right side
    481,956.52x = 193,526,653,627.14
  5. Step 5: Solve for x
    x = 193,526,653,627.14/481,956.52
  6. Step 6: Final answer
    x = 401,543.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.