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Finding the Fourth Proportional to 303,661.26, 455,445.06 and 103,935.78

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Solution

The fourth proportional to 303,661.26, 455,445.06 and 103,935.78 is: 155,887.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,661.26 : 455,445.06 = 103,935.78 : x
  2. Step 2: Convert to fraction form
    303,661.26/455,445.06 = 103,935.78/x
  3. Step 3: Cross multiply
    303,661.26x = 455,445.06 × 103,935.78
  4. Step 4: Simplify right side
    303,661.26x = 47,337,037,558.25
  5. Step 5: Solve for x
    x = 47,337,037,558.25/303,661.26
  6. Step 6: Final answer
    x = 155,887.64

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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.