Home / 426,135.21-639,036.70-159,750.38

Finding the Fourth Proportional to 426,135.21, 639,036.70 and 159,750.38

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Solution

The fourth proportional to 426,135.21, 639,036.70 and 159,750.38 is: 239,563.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,135.21 : 639,036.70 = 159,750.38 : x
  2. Step 2: Convert to fraction form
    426,135.21/639,036.70 = 159,750.38/x
  3. Step 3: Cross multiply
    426,135.21x = 639,036.70 × 159,750.38
  4. Step 4: Simplify right side
    426,135.21x = 102,086,352,064.39
  5. Step 5: Solve for x
    x = 102,086,352,064.39/426,135.21
  6. Step 6: Final answer
    x = 239,563.29

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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.