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Finding the Fourth Proportional to 455,057.92, 627,993.12 and 251,122.24

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Solution

The fourth proportional to 455,057.92, 627,993.12 and 251,122.24 is: 346,555.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,057.92 : 627,993.12 = 251,122.24 : x
  2. Step 2: Convert to fraction form
    455,057.92/627,993.12 = 251,122.24/x
  3. Step 3: Cross multiply
    455,057.92x = 627,993.12 × 251,122.24
  4. Step 4: Simplify right side
    455,057.92x = 157,703,038,998.99
  5. Step 5: Solve for x
    x = 157,703,038,998.99/455,057.92
  6. Step 6: Final answer
    x = 346,555.97

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1.5x scale

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.