Home / 426,122.58-639,428.09-173,356.41

Finding the Fourth Proportional to 426,122.58, 639,428.09 and 173,356.41

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Solution

The fourth proportional to 426,122.58, 639,428.09 and 173,356.41 is: 260,133.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,122.58 : 639,428.09 = 173,356.41 : x
  2. Step 2: Convert to fraction form
    426,122.58/639,428.09 = 173,356.41/x
  3. Step 3: Cross multiply
    426,122.58x = 639,428.09 × 173,356.41
  4. Step 4: Simplify right side
    426,122.58x = 110,848,957,268.78
  5. Step 5: Solve for x
    x = 110,848,957,268.78/426,122.58
  6. Step 6: Final answer
    x = 260,133.97

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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.