Home / 309,185.10-426,687.62-173,220.12

Finding the Fourth Proportional to 309,185.10, 426,687.62 and 173,220.12

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Solution

The fourth proportional to 309,185.10, 426,687.62 and 173,220.12 is: 239,050.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,185.10 : 426,687.62 = 173,220.12 : x
  2. Step 2: Convert to fraction form
    309,185.10/426,687.62 = 173,220.12/x
  3. Step 3: Cross multiply
    309,185.10x = 426,687.62 × 173,220.12
  4. Step 4: Simplify right side
    309,185.10x = 73,910,879,872.81
  5. Step 5: Solve for x
    x = 73,910,879,872.81/309,185.10
  6. Step 6: Final answer
    x = 239,050.59

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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.