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Finding the Fourth Proportional to 419,785.64, 629,511.42 and 153,485.48

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Solution

The fourth proportional to 419,785.64, 629,511.42 and 153,485.48 is: 230,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,785.64 : 629,511.42 = 153,485.48 : x
  2. Step 2: Convert to fraction form
    419,785.64/629,511.42 = 153,485.48/x
  3. Step 3: Cross multiply
    419,785.64x = 629,511.42 × 153,485.48
  4. Step 4: Simplify right side
    419,785.64x = 96,620,862,464.18
  5. Step 5: Solve for x
    x = 96,620,862,464.18/419,785.64
  6. Step 6: Final answer
    x = 230,167.15

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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.