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Finding the Fourth Proportional to 388,896.36, 536,676.96 and 210,048.36

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Solution

The fourth proportional to 388,896.36, 536,676.96 and 210,048.36 is: 289,866.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,896.36 : 536,676.96 = 210,048.36 : x
  2. Step 2: Convert to fraction form
    388,896.36/536,676.96 = 210,048.36/x
  3. Step 3: Cross multiply
    388,896.36x = 536,676.96 × 210,048.36
  4. Step 4: Simplify right side
    388,896.36x = 112,728,115,297.79
  5. Step 5: Solve for x
    x = 112,728,115,297.79/388,896.36
  6. Step 6: Final answer
    x = 289,866.73

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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.