Home / 217,120.86-299,540.52-135,401.04

Finding the Fourth Proportional to 217,120.86, 299,540.52 and 135,401.04

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Solution

The fourth proportional to 217,120.86, 299,540.52 and 135,401.04 is: 186,799.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,120.86 : 299,540.52 = 135,401.04 : x
  2. Step 2: Convert to fraction form
    217,120.86/299,540.52 = 135,401.04/x
  3. Step 3: Cross multiply
    217,120.86x = 299,540.52 × 135,401.04
  4. Step 4: Simplify right side
    217,120.86x = 40,558,097,930.14
  5. Step 5: Solve for x
    x = 40,558,097,930.14/217,120.86
  6. Step 6: Final answer
    x = 186,799.64

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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.