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Finding the Fourth Proportional to 336,994.40, 505,351.07 and 137,179.15

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Solution

The fourth proportional to 336,994.40, 505,351.07 and 137,179.15 is: 205,711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,994.40 : 505,351.07 = 137,179.15 : x
  2. Step 2: Convert to fraction form
    336,994.40/505,351.07 = 137,179.15/x
  3. Step 3: Cross multiply
    336,994.40x = 505,351.07 × 137,179.15
  4. Step 4: Simplify right side
    336,994.40x = 69,323,628,799.34
  5. Step 5: Solve for x
    x = 69,323,628,799.34/336,994.40
  6. Step 6: Final answer
    x = 205,711.51

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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.