Home / 438,799.74-658,124.34-139,213.54

Finding the Fourth Proportional to 438,799.74, 658,124.34 and 139,213.54

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Solution

The fourth proportional to 438,799.74, 658,124.34 and 139,213.54 is: 208,796.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,799.74 : 658,124.34 = 139,213.54 : x
  2. Step 2: Convert to fraction form
    438,799.74/658,124.34 = 139,213.54/x
  3. Step 3: Cross multiply
    438,799.74x = 658,124.34 × 139,213.54
  4. Step 4: Simplify right side
    438,799.74x = 91,619,819,131.56
  5. Step 5: Solve for x
    x = 91,619,819,131.56/438,799.74
  6. Step 6: Final answer
    x = 208,796.43

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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.