Home / 399,628.41-599,428.77-100,111.56

Finding the Fourth Proportional to 399,628.41, 599,428.77 and 100,111.56

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Solution

The fourth proportional to 399,628.41, 599,428.77 and 100,111.56 is: 150,163.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,628.41 : 599,428.77 = 100,111.56 : x
  2. Step 2: Convert to fraction form
    399,628.41/599,428.77 = 100,111.56/x
  3. Step 3: Cross multiply
    399,628.41x = 599,428.77 × 100,111.56
  4. Step 4: Simplify right side
    399,628.41x = 60,009,749,273.58
  5. Step 5: Solve for x
    x = 60,009,749,273.58/399,628.41
  6. Step 6: Final answer
    x = 150,163.87

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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.