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Finding the Fourth Proportional to 303,641.70, 455,157.74 and 103,825.44

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Solution

The fourth proportional to 303,641.70, 455,157.74 and 103,825.44 is: 155,633.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,641.70 : 455,157.74 = 103,825.44 : x
  2. Step 2: Convert to fraction form
    303,641.70/455,157.74 = 103,825.44/x
  3. Step 3: Cross multiply
    303,641.70x = 455,157.74 × 103,825.44
  4. Step 4: Simplify right side
    303,641.70x = 47,256,952,624.91
  5. Step 5: Solve for x
    x = 47,256,952,624.91/303,641.70
  6. Step 6: Final answer
    x = 155,633.94

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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.