Home / 217,653.43-300,345.27-122,141.67

Finding the Fourth Proportional to 217,653.43, 300,345.27 and 122,141.67

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Solution

The fourth proportional to 217,653.43, 300,345.27 and 122,141.67 is: 168,546.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,653.43 : 300,345.27 = 122,141.67 : x
  2. Step 2: Convert to fraction form
    217,653.43/300,345.27 = 122,141.67/x
  3. Step 3: Cross multiply
    217,653.43x = 300,345.27 × 122,141.67
  4. Step 4: Simplify right side
    217,653.43x = 36,684,672,959.52
  5. Step 5: Solve for x
    x = 36,684,672,959.52/217,653.43
  6. Step 6: Final answer
    x = 168,546.27

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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.