Home / 245,109.70-338,198.91-143,088.86

Finding the Fourth Proportional to 245,109.70, 338,198.91 and 143,088.86

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Solution

The fourth proportional to 245,109.70, 338,198.91 and 143,088.86 is: 197,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,109.70 : 338,198.91 = 143,088.86 : x
  2. Step 2: Convert to fraction form
    245,109.70/338,198.91 = 143,088.86/x
  3. Step 3: Cross multiply
    245,109.70x = 338,198.91 × 143,088.86
  4. Step 4: Simplify right side
    245,109.70x = 48,392,496,485.14
  5. Step 5: Solve for x
    x = 48,392,496,485.14/245,109.70
  6. Step 6: Final answer
    x = 197,431.99

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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.