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Finding the Fourth Proportional to 455,326.50, 628,371.60 and 251,406.37

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Solution

The fourth proportional to 455,326.50, 628,371.60 and 251,406.37 is: 346,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,326.50 : 628,371.60 = 251,406.37 : x
  2. Step 2: Convert to fraction form
    455,326.50/628,371.60 = 251,406.37/x
  3. Step 3: Cross multiply
    455,326.50x = 628,371.60 × 251,406.37
  4. Step 4: Simplify right side
    455,326.50x = 157,976,619,982.27
  5. Step 5: Solve for x
    x = 157,976,619,982.27/455,326.50
  6. Step 6: Final answer
    x = 346,952.40

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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.