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Finding the Fourth Proportional to 343,161.90, 514,181.07 and 330,039.90

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Solution

The fourth proportional to 343,161.90, 514,181.07 and 330,039.90 is: 494,519.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,161.90 : 514,181.07 = 330,039.90 : x
  2. Step 2: Convert to fraction form
    343,161.90/514,181.07 = 330,039.90/x
  3. Step 3: Cross multiply
    343,161.90x = 514,181.07 × 330,039.90
  4. Step 4: Simplify right side
    343,161.90x = 169,700,268,924.69
  5. Step 5: Solve for x
    x = 169,700,268,924.69/343,161.90
  6. Step 6: Final answer
    x = 494,519.55

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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.