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Finding the Fourth Proportional to 455,792.27, 628,990.92 and 251,857.25

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Solution

The fourth proportional to 455,792.27, 628,990.92 and 251,857.25 is: 347,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,792.27 : 628,990.92 = 251,857.25 : x
  2. Step 2: Convert to fraction form
    455,792.27/628,990.92 = 251,857.25/x
  3. Step 3: Cross multiply
    455,792.27x = 628,990.92 × 251,857.25
  4. Step 4: Simplify right side
    455,792.27x = 158,415,922,599.93
  5. Step 5: Solve for x
    x = 158,415,922,599.93/455,792.27
  6. Step 6: Final answer
    x = 347,561.67

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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.