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Finding the Fourth Proportional to 335,122.52, 502,679.40 and 82,405.20

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Solution

The fourth proportional to 335,122.52, 502,679.40 and 82,405.20 is: 123,606.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,122.52 : 502,679.40 = 82,405.20 : x
  2. Step 2: Convert to fraction form
    335,122.52/502,679.40 = 82,405.20/x
  3. Step 3: Cross multiply
    335,122.52x = 502,679.40 × 82,405.20
  4. Step 4: Simplify right side
    335,122.52x = 41,423,395,704.87
  5. Step 5: Solve for x
    x = 41,423,395,704.87/335,122.52
  6. Step 6: Final answer
    x = 123,606.72

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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.