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Finding the Fourth Proportional to 343,763.60, 515,448.56 and 323,949.38

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Solution

The fourth proportional to 343,763.60, 515,448.56 and 323,949.38 is: 485,738.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,763.60 : 515,448.56 = 323,949.38 : x
  2. Step 2: Convert to fraction form
    343,763.60/515,448.56 = 323,949.38/x
  3. Step 3: Cross multiply
    343,763.60x = 515,448.56 × 323,949.38
  4. Step 4: Simplify right side
    343,763.60x = 166,979,239,666.52
  5. Step 5: Solve for x
    x = 166,979,239,666.52/343,763.60
  6. Step 6: Final answer
    x = 485,738.58

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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.