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Finding the Fourth Proportional to 336,986.84, 505,479.31 and 137,260.28

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Solution

The fourth proportional to 336,986.84, 505,479.31 and 137,260.28 is: 205,890.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,986.84 : 505,479.31 = 137,260.28 : x
  2. Step 2: Convert to fraction form
    336,986.84/505,479.31 = 137,260.28/x
  3. Step 3: Cross multiply
    336,986.84x = 505,479.31 × 137,260.28
  4. Step 4: Simplify right side
    336,986.84x = 69,382,228,754.26
  5. Step 5: Solve for x
    x = 69,382,228,754.26/336,986.84
  6. Step 6: Final answer
    x = 205,890.03

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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.