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Finding the Fourth Proportional to 455,365, 628,410.18 and 254,161

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Solution

The fourth proportional to 455,365, 628,410.18 and 254,161 is: 350,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,365 : 628,410.18 = 254,161 : x
  2. Step 2: Convert to fraction form
    455,365/628,410.18 = 254,161/x
  3. Step 3: Cross multiply
    455,365x = 628,410.18 × 254,161
  4. Step 4: Simplify right side
    455,365x = 159,717,359,758.98
  5. Step 5: Solve for x
    x = 159,717,359,758.98/455,365
  6. Step 6: Final answer
    x = 350,745.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.