Home / 307,163.20-423,919.56-171,209.56

Finding the Fourth Proportional to 307,163.20, 423,919.56 and 171,209.56

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Solution

The fourth proportional to 307,163.20, 423,919.56 and 171,209.56 is: 236,288.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,163.20 : 423,919.56 = 171,209.56 : x
  2. Step 2: Convert to fraction form
    307,163.20/423,919.56 = 171,209.56/x
  3. Step 3: Cross multiply
    307,163.20x = 423,919.56 × 171,209.56
  4. Step 4: Simplify right side
    307,163.20x = 72,579,081,342.99
  5. Step 5: Solve for x
    x = 72,579,081,342.99/307,163.20
  6. Step 6: Final answer
    x = 236,288.34

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1.5x scale

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.