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Finding the Fourth Proportional to 209,958.90, 314,846.01 and 76,804.62

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Solution

The fourth proportional to 209,958.90, 314,846.01 and 76,804.62 is: 115,173.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,958.90 : 314,846.01 = 76,804.62 : x
  2. Step 2: Convert to fraction form
    209,958.90/314,846.01 = 76,804.62/x
  3. Step 3: Cross multiply
    209,958.90x = 314,846.01 × 76,804.62
  4. Step 4: Simplify right side
    209,958.90x = 24,181,628,156.57
  5. Step 5: Solve for x
    x = 24,181,628,156.57/209,958.90
  6. Step 6: Final answer
    x = 115,173.15

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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.