Home / 309,260.13-426,779.04-188,401.38

Finding the Fourth Proportional to 309,260.13, 426,779.04 and 188,401.38

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Solution

The fourth proportional to 309,260.13, 426,779.04 and 188,401.38 is: 259,993.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,260.13 : 426,779.04 = 188,401.38 : x
  2. Step 2: Convert to fraction form
    309,260.13/426,779.04 = 188,401.38/x
  3. Step 3: Cross multiply
    309,260.13x = 426,779.04 × 188,401.38
  4. Step 4: Simplify right side
    309,260.13x = 80,405,760,091.08
  5. Step 5: Solve for x
    x = 80,405,760,091.08/309,260.13
  6. Step 6: Final answer
    x = 259,993.94

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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.