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Finding the Fourth Proportional to 455,208.29, 628,093.66 and 261,578.60

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Solution

The fourth proportional to 455,208.29, 628,093.66 and 261,578.60 is: 360,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,208.29 : 628,093.66 = 261,578.60 : x
  2. Step 2: Convert to fraction form
    455,208.29/628,093.66 = 261,578.60/x
  3. Step 3: Cross multiply
    455,208.29x = 628,093.66 × 261,578.60
  4. Step 4: Simplify right side
    455,208.29x = 164,295,855,803.32
  5. Step 5: Solve for x
    x = 164,295,855,803.32/455,208.29
  6. Step 6: Final answer
    x = 360,924.57

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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.