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Finding the Fourth Proportional to 375,893.09, 518,700.36 and 212,541.58

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Solution

The fourth proportional to 375,893.09, 518,700.36 and 212,541.58 is: 293,289.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,893.09 : 518,700.36 = 212,541.58 : x
  2. Step 2: Convert to fraction form
    375,893.09/518,700.36 = 212,541.58/x
  3. Step 3: Cross multiply
    375,893.09x = 518,700.36 × 212,541.58
  4. Step 4: Simplify right side
    375,893.09x = 110,245,392,764.22
  5. Step 5: Solve for x
    x = 110,245,392,764.22/375,893.09
  6. Step 6: Final answer
    x = 293,289.23

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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.