Home / 423,208.79-634,991.25-263,418.37

Finding the Fourth Proportional to 423,208.79, 634,991.25 and 263,418.37

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Solution

The fourth proportional to 423,208.79, 634,991.25 and 263,418.37 is: 395,238.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,208.79 : 634,991.25 = 263,418.37 : x
  2. Step 2: Convert to fraction form
    423,208.79/634,991.25 = 263,418.37/x
  3. Step 3: Cross multiply
    423,208.79x = 634,991.25 × 263,418.37
  4. Step 4: Simplify right side
    423,208.79x = 167,268,359,439.60
  5. Step 5: Solve for x
    x = 167,268,359,439.60/423,208.79
  6. Step 6: Final answer
    x = 395,238.39

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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.