Home / 217,710.24-300,438.94-122,216.91

Finding the Fourth Proportional to 217,710.24, 300,438.94 and 122,216.91

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Solution

The fourth proportional to 217,710.24, 300,438.94 and 122,216.91 is: 168,658.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,710.24 : 300,438.94 = 122,216.91 : x
  2. Step 2: Convert to fraction form
    217,710.24/300,438.94 = 122,216.91/x
  3. Step 3: Cross multiply
    217,710.24x = 300,438.94 × 122,216.91
  4. Step 4: Simplify right side
    217,710.24x = 36,718,718,890.48
  5. Step 5: Solve for x
    x = 36,718,718,890.48/217,710.24
  6. Step 6: Final answer
    x = 168,658.67

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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.