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Finding the Fourth Proportional to 339,829.02, 468,847.26 and 210,721

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Solution

The fourth proportional to 339,829.02, 468,847.26 and 210,721 is: 290,722.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,829.02 : 468,847.26 = 210,721 : x
  2. Step 2: Convert to fraction form
    339,829.02/468,847.26 = 210,721/x
  3. Step 3: Cross multiply
    339,829.02x = 468,847.26 × 210,721
  4. Step 4: Simplify right side
    339,829.02x = 98,795,963,474.46
  5. Step 5: Solve for x
    x = 98,795,963,474.46/339,829.02
  6. Step 6: Final answer
    x = 290,722.56

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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.