Home / 426,161.25-639,243.09-110,620.89

Finding the Fourth Proportional to 426,161.25, 639,243.09 and 110,620.89

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Solution

The fourth proportional to 426,161.25, 639,243.09 and 110,620.89 is: 165,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,161.25 : 639,243.09 = 110,620.89 : x
  2. Step 2: Convert to fraction form
    426,161.25/639,243.09 = 110,620.89/x
  3. Step 3: Cross multiply
    426,161.25x = 639,243.09 × 110,620.89
  4. Step 4: Simplify right side
    426,161.25x = 70,713,639,542.15
  5. Step 5: Solve for x
    x = 70,713,639,542.15/426,161.25
  6. Step 6: Final answer
    x = 165,931.65

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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.