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Finding the Fourth Proportional to 455,021.10, 627,924.96 and 251,073.90

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Solution

The fourth proportional to 455,021.10, 627,924.96 and 251,073.90 is: 346,479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,021.10 : 627,924.96 = 251,073.90 : x
  2. Step 2: Convert to fraction form
    455,021.10/627,924.96 = 251,073.90/x
  3. Step 3: Cross multiply
    455,021.10x = 627,924.96 × 251,073.90
  4. Step 4: Simplify right side
    455,021.10x = 157,655,568,614.54
  5. Step 5: Solve for x
    x = 157,655,568,614.54/455,021.10
  6. Step 6: Final answer
    x = 346,479.69

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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.