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Finding the Fourth Proportional to 203,043.05, 304,503.05 and 84,686.72

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Solution

The fourth proportional to 203,043.05, 304,503.05 and 84,686.72 is: 127,004.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,043.05 : 304,503.05 = 84,686.72 : x
  2. Step 2: Convert to fraction form
    203,043.05/304,503.05 = 84,686.72/x
  3. Step 3: Cross multiply
    203,043.05x = 304,503.05 × 84,686.72
  4. Step 4: Simplify right side
    203,043.05x = 25,787,362,747.33
  5. Step 5: Solve for x
    x = 25,787,362,747.33/203,043.05
  6. Step 6: Final answer
    x = 127,004.41

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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.