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Finding the Fourth Proportional to 303,990.80, 455,876.84 and 104,259.38

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Solution

The fourth proportional to 303,990.80, 455,876.84 and 104,259.38 is: 156,351.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,990.80 : 455,876.84 = 104,259.38 : x
  2. Step 2: Convert to fraction form
    303,990.80/455,876.84 = 104,259.38/x
  3. Step 3: Cross multiply
    303,990.80x = 455,876.84 × 104,259.38
  4. Step 4: Simplify right side
    303,990.80x = 47,529,434,676.02
  5. Step 5: Solve for x
    x = 47,529,434,676.02/303,990.80
  6. Step 6: Final answer
    x = 156,351.56

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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.