Home / 217,639.05-300,343.14-120,844.25

Finding the Fourth Proportional to 217,639.05, 300,343.14 and 120,844.25

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Solution

The fourth proportional to 217,639.05, 300,343.14 and 120,844.25 is: 166,765.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,639.05 : 300,343.14 = 120,844.25 : x
  2. Step 2: Convert to fraction form
    217,639.05/300,343.14 = 120,844.25/x
  3. Step 3: Cross multiply
    217,639.05x = 300,343.14 × 120,844.25
  4. Step 4: Simplify right side
    217,639.05x = 36,294,742,809.95
  5. Step 5: Solve for x
    x = 36,294,742,809.95/217,639.05
  6. Step 6: Final answer
    x = 166,765.76

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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.