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Finding the Fourth Proportional to 375,812.71, 518,599.21 and 222,865.32

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Solution

The fourth proportional to 375,812.71, 518,599.21 and 222,865.32 is: 307,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,812.71 : 518,599.21 = 222,865.32 : x
  2. Step 2: Convert to fraction form
    375,812.71/518,599.21 = 222,865.32/x
  3. Step 3: Cross multiply
    375,812.71x = 518,599.21 × 222,865.32
  4. Step 4: Simplify right side
    375,812.71x = 115,577,780,693.85
  5. Step 5: Solve for x
    x = 115,577,780,693.85/375,812.71
  6. Step 6: Final answer
    x = 307,540.90

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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.