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Finding the Fourth Proportional to 375,891.58, 518,698.29 and 212,540.07

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Solution

The fourth proportional to 375,891.58, 518,698.29 and 212,540.07 is: 293,287.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,891.58 : 518,698.29 = 212,540.07 : x
  2. Step 2: Convert to fraction form
    375,891.58/518,698.29 = 212,540.07/x
  3. Step 3: Cross multiply
    375,891.58x = 518,698.29 × 212,540.07
  4. Step 4: Simplify right side
    375,891.58x = 110,244,173,607.62
  5. Step 5: Solve for x
    x = 110,244,173,607.62/375,891.58
  6. Step 6: Final answer
    x = 293,287.16

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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.