Home / 217,390.37-299,998.43-120,608.90

Finding the Fourth Proportional to 217,390.37, 299,998.43 and 120,608.90

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Solution

The fourth proportional to 217,390.37, 299,998.43 and 120,608.90 is: 166,440.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,390.37 : 299,998.43 = 120,608.90 : x
  2. Step 2: Convert to fraction form
    217,390.37/299,998.43 = 120,608.90/x
  3. Step 3: Cross multiply
    217,390.37x = 299,998.43 × 120,608.90
  4. Step 4: Simplify right side
    217,390.37x = 36,182,478,540.99
  5. Step 5: Solve for x
    x = 36,182,478,540.99/217,390.37
  6. Step 6: Final answer
    x = 166,440.12

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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.