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Finding the Fourth Proportional to 375,725.05, 518,578.81 and 345,462.44

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Solution

The fourth proportional to 375,725.05, 518,578.81 and 345,462.44 is: 476,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,725.05 : 518,578.81 = 345,462.44 : x
  2. Step 2: Convert to fraction form
    375,725.05/518,578.81 = 345,462.44/x
  3. Step 3: Cross multiply
    375,725.05x = 518,578.81 × 345,462.44
  4. Step 4: Simplify right side
    375,725.05x = 179,149,497,578.35
  5. Step 5: Solve for x
    x = 179,149,497,578.35/375,725.05
  6. Step 6: Final answer
    x = 476,810.10

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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.