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Finding the Fourth Proportional to 481,422.70, 721,939.65 and 165,717.10

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Solution

The fourth proportional to 481,422.70, 721,939.65 and 165,717.10 is: 248,508.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,422.70 : 721,939.65 = 165,717.10 : x
  2. Step 2: Convert to fraction form
    481,422.70/721,939.65 = 165,717.10/x
  3. Step 3: Cross multiply
    481,422.70x = 721,939.65 × 165,717.10
  4. Step 4: Simplify right side
    481,422.70x = 119,637,745,173.02
  5. Step 5: Solve for x
    x = 119,637,745,173.02/481,422.70
  6. Step 6: Final answer
    x = 248,508.73

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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.