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Finding the Fourth Proportional to 366,989.31, 506,419.21 and 203,654.58

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Solution

The fourth proportional to 366,989.31, 506,419.21 and 203,654.58 is: 281,028.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,989.31 : 506,419.21 = 203,654.58 : x
  2. Step 2: Convert to fraction form
    366,989.31/506,419.21 = 203,654.58/x
  3. Step 3: Cross multiply
    366,989.31x = 506,419.21 × 203,654.58
  4. Step 4: Simplify right side
    366,989.31x = 103,134,591,869.06
  5. Step 5: Solve for x
    x = 103,134,591,869.06/366,989.31
  6. Step 6: Final answer
    x = 281,028.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.