Home / 639,241.31-959,018.03-212,776.31

Finding the Fourth Proportional to 639,241.31, 959,018.03 and 212,776.31

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Solution

The fourth proportional to 639,241.31, 959,018.03 and 212,776.31 is: 319,216.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,241.31 : 959,018.03 = 212,776.31 : x
  2. Step 2: Convert to fraction form
    639,241.31/959,018.03 = 212,776.31/x
  3. Step 3: Cross multiply
    639,241.31x = 959,018.03 × 212,776.31
  4. Step 4: Simplify right side
    639,241.31x = 204,056,317,646.87
  5. Step 5: Solve for x
    x = 204,056,317,646.87/639,241.31
  6. Step 6: Final answer
    x = 319,216.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.