Home / 319,021.23-478,579.41-113,839.90

Finding the Fourth Proportional to 319,021.23, 478,579.41 and 113,839.90

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Solution

The fourth proportional to 319,021.23, 478,579.41 and 113,839.90 is: 170,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,021.23 : 478,579.41 = 113,839.90 : x
  2. Step 2: Convert to fraction form
    319,021.23/478,579.41 = 113,839.90/x
  3. Step 3: Cross multiply
    319,021.23x = 478,579.41 × 113,839.90
  4. Step 4: Simplify right side
    319,021.23x = 54,481,433,672.02
  5. Step 5: Solve for x
    x = 54,481,433,672.02/319,021.23
  6. Step 6: Final answer
    x = 170,776.83

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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.