Home / 307,072.11-423,760.38-178,035.60

Finding the Fourth Proportional to 307,072.11, 423,760.38 and 178,035.60

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Solution

The fourth proportional to 307,072.11, 423,760.38 and 178,035.60 is: 245,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,072.11 : 423,760.38 = 178,035.60 : x
  2. Step 2: Convert to fraction form
    307,072.11/423,760.38 = 178,035.60/x
  3. Step 3: Cross multiply
    307,072.11x = 423,760.38 × 178,035.60
  4. Step 4: Simplify right side
    307,072.11x = 75,444,433,509.53
  5. Step 5: Solve for x
    x = 75,444,433,509.53/307,072.11
  6. Step 6: Final answer
    x = 245,689.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.