Home / 307,320.37-423,137.03-261,289.49

Finding the Fourth Proportional to 307,320.37, 423,137.03 and 261,289.49

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Solution

The fourth proportional to 307,320.37, 423,137.03 and 261,289.49 is: 359,758.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,320.37 : 423,137.03 = 261,289.49 : x
  2. Step 2: Convert to fraction form
    307,320.37/423,137.03 = 261,289.49/x
  3. Step 3: Cross multiply
    307,320.37x = 423,137.03 × 261,289.49
  4. Step 4: Simplify right side
    307,320.37x = 110,561,255,346.68
  5. Step 5: Solve for x
    x = 110,561,255,346.68/307,320.37
  6. Step 6: Final answer
    x = 359,758.96

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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.