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Finding the Fourth Proportional to 371,323.45, 512,388.95 and 210,150.44

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Solution

The fourth proportional to 371,323.45, 512,388.95 and 210,150.44 is: 289,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,323.45 : 512,388.95 = 210,150.44 : x
  2. Step 2: Convert to fraction form
    371,323.45/512,388.95 = 210,150.44/x
  3. Step 3: Cross multiply
    371,323.45x = 512,388.95 × 210,150.44
  4. Step 4: Simplify right side
    371,323.45x = 107,678,763,293.64
  5. Step 5: Solve for x
    x = 107,678,763,293.64/371,323.45
  6. Step 6: Final answer
    x = 289,986.43

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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.