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Finding the Fourth Proportional to 321,670.08, 482,431.68 and 122,012.64

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Solution

The fourth proportional to 321,670.08, 482,431.68 and 122,012.64 is: 182,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,670.08 : 482,431.68 = 122,012.64 : x
  2. Step 2: Convert to fraction form
    321,670.08/482,431.68 = 122,012.64/x
  3. Step 3: Cross multiply
    321,670.08x = 482,431.68 × 122,012.64
  4. Step 4: Simplify right side
    321,670.08x = 58,862,762,896.44
  5. Step 5: Solve for x
    x = 58,862,762,896.44/321,670.08
  6. Step 6: Final answer
    x = 182,991.10

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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.