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Finding the Fourth Proportional to 455,199.77, 628,081.91 and 261,570.07

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Solution

The fourth proportional to 455,199.77, 628,081.91 and 261,570.07 is: 360,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,199.77 : 628,081.91 = 261,570.07 : x
  2. Step 2: Convert to fraction form
    455,199.77/628,081.91 = 261,570.07/x
  3. Step 3: Cross multiply
    455,199.77x = 628,081.91 × 261,570.07
  4. Step 4: Simplify right side
    455,199.77x = 164,287,424,716.17
  5. Step 5: Solve for x
    x = 164,287,424,716.17/455,199.77
  6. Step 6: Final answer
    x = 360,912.80

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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.