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Finding the Fourth Proportional to 336,812.10, 505,218.15 and 137,029.65

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Solution

The fourth proportional to 336,812.10, 505,218.15 and 137,029.65 is: 205,544.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,812.10 : 505,218.15 = 137,029.65 : x
  2. Step 2: Convert to fraction form
    336,812.10/505,218.15 = 137,029.65/x
  3. Step 3: Cross multiply
    336,812.10x = 505,218.15 × 137,029.65
  4. Step 4: Simplify right side
    336,812.10x = 69,229,866,268.15
  5. Step 5: Solve for x
    x = 69,229,866,268.15/336,812.10
  6. Step 6: Final answer
    x = 205,544.48

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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.