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Finding the Fourth Proportional to 445,148.87, 613,808.63 and 322,398.48

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Solution

The fourth proportional to 445,148.87, 613,808.63 and 322,398.48 is: 444,550.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,148.87 : 613,808.63 = 322,398.48 : x
  2. Step 2: Convert to fraction form
    445,148.87/613,808.63 = 322,398.48/x
  3. Step 3: Cross multiply
    445,148.87x = 613,808.63 × 322,398.48
  4. Step 4: Simplify right side
    445,148.87x = 197,890,969,582.49
  5. Step 5: Solve for x
    x = 197,890,969,582.49/445,148.87
  6. Step 6: Final answer
    x = 444,550.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.