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Finding the Fourth Proportional to 203,859.70, 305,789.55 and 201,891.40

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Solution

The fourth proportional to 203,859.70, 305,789.55 and 201,891.40 is: 302,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,859.70 : 305,789.55 = 201,891.40 : x
  2. Step 2: Convert to fraction form
    203,859.70/305,789.55 = 201,891.40/x
  3. Step 3: Cross multiply
    203,859.70x = 305,789.55 × 201,891.40
  4. Step 4: Simplify right side
    203,859.70x = 61,736,280,354.87
  5. Step 5: Solve for x
    x = 61,736,280,354.87/203,859.70
  6. Step 6: Final answer
    x = 302,837.10

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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.