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Finding the Fourth Proportional to 203,046.12, 304,485.30 and 76,664.79

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Solution

The fourth proportional to 203,046.12, 304,485.30 and 76,664.79 is: 114,965.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,046.12 : 304,485.30 = 76,664.79 : x
  2. Step 2: Convert to fraction form
    203,046.12/304,485.30 = 76,664.79/x
  3. Step 3: Cross multiply
    203,046.12x = 304,485.30 × 76,664.79
  4. Step 4: Simplify right side
    203,046.12x = 23,343,301,582.59
  5. Step 5: Solve for x
    x = 23,343,301,582.59/203,046.12
  6. Step 6: Final answer
    x = 114,965.51

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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.