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Finding the Fourth Proportional to 322,485.12, 483,938.37 and 122,807.43

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Solution

The fourth proportional to 322,485.12, 483,938.37 and 122,807.43 is: 184,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,485.12 : 483,938.37 = 122,807.43 : x
  2. Step 2: Convert to fraction form
    322,485.12/483,938.37 = 122,807.43/x
  3. Step 3: Cross multiply
    322,485.12x = 483,938.37 × 122,807.43
  4. Step 4: Simplify right side
    322,485.12x = 59,431,227,498.09
  5. Step 5: Solve for x
    x = 59,431,227,498.09/322,485.12
  6. Step 6: Final answer
    x = 184,291.38

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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.