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Finding the Fourth Proportional to 303,693.40, 455,529.30 and 137,481.40

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Solution

The fourth proportional to 303,693.40, 455,529.30 and 137,481.40 is: 206,217.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,693.40 : 455,529.30 = 137,481.40 : x
  2. Step 2: Convert to fraction form
    303,693.40/455,529.30 = 137,481.40/x
  3. Step 3: Cross multiply
    303,693.40x = 455,529.30 × 137,481.40
  4. Step 4: Simplify right side
    303,693.40x = 62,626,805,905.02
  5. Step 5: Solve for x
    x = 62,626,805,905.02/303,693.40
  6. Step 6: Final answer
    x = 206,217.21

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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.