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Finding the Fourth Proportional to 259,076.84, 388,668.11 and 109,317.15

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Solution

The fourth proportional to 259,076.84, 388,668.11 and 109,317.15 is: 163,998.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,076.84 : 388,668.11 = 109,317.15 : x
  2. Step 2: Convert to fraction form
    259,076.84/388,668.11 = 109,317.15/x
  3. Step 3: Cross multiply
    259,076.84x = 388,668.11 × 109,317.15
  4. Step 4: Simplify right side
    259,076.84x = 42,488,089,534.50
  5. Step 5: Solve for x
    x = 42,488,089,534.50/259,076.84
  6. Step 6: Final answer
    x = 163,998.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.