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Finding the Fourth Proportional to 323,798.69, 485,698.94 and 113,387.42

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Solution

The fourth proportional to 323,798.69, 485,698.94 and 113,387.42 is: 170,081.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,798.69 : 485,698.94 = 113,387.42 : x
  2. Step 2: Convert to fraction form
    323,798.69/485,698.94 = 113,387.42/x
  3. Step 3: Cross multiply
    323,798.69x = 485,698.94 × 113,387.42
  4. Step 4: Simplify right side
    323,798.69x = 55,072,147,133.11
  5. Step 5: Solve for x
    x = 55,072,147,133.11/323,798.69
  6. Step 6: Final answer
    x = 170,081.44

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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.