Home / 309,183.12-426,707.10-173,239.20

Finding the Fourth Proportional to 309,183.12, 426,707.10 and 173,239.20

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Solution

The fourth proportional to 309,183.12, 426,707.10 and 173,239.20 is: 239,089.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,183.12 : 426,707.10 = 173,239.20 : x
  2. Step 2: Convert to fraction form
    309,183.12/426,707.10 = 173,239.20/x
  3. Step 3: Cross multiply
    309,183.12x = 426,707.10 × 173,239.20
  4. Step 4: Simplify right side
    309,183.12x = 73,922,396,638.32
  5. Step 5: Solve for x
    x = 73,922,396,638.32/309,183.12
  6. Step 6: Final answer
    x = 239,089.37

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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.