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Finding the Fourth Proportional to 303,357.21, 455,116 and 103,676.82

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Solution

The fourth proportional to 303,357.21, 455,116 and 103,676.82 is: 155,542.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,357.21 : 455,116 = 103,676.82 : x
  2. Step 2: Convert to fraction form
    303,357.21/455,116 = 103,676.82/x
  3. Step 3: Cross multiply
    303,357.21x = 455,116 × 103,676.82
  4. Step 4: Simplify right side
    303,357.21x = 47,184,979,611.12
  5. Step 5: Solve for x
    x = 47,184,979,611.12/303,357.21
  6. Step 6: Final answer
    x = 155,542.63

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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.