Home / 217,457.28-300,087.36-121,961.92

Finding the Fourth Proportional to 217,457.28, 300,087.36 and 121,961.92

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Solution

The fourth proportional to 217,457.28, 300,087.36 and 121,961.92 is: 168,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,457.28 : 300,087.36 = 121,961.92 : x
  2. Step 2: Convert to fraction form
    217,457.28/300,087.36 = 121,961.92/x
  3. Step 3: Cross multiply
    217,457.28x = 300,087.36 × 121,961.92
  4. Step 4: Simplify right side
    217,457.28x = 36,599,230,593.33
  5. Step 5: Solve for x
    x = 36,599,230,593.33/217,457.28
  6. Step 6: Final answer
    x = 168,305.38

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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.