Home / 309,185.16-426,687.77-173,220.23

Finding the Fourth Proportional to 309,185.16, 426,687.77 and 173,220.23

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Solution

The fourth proportional to 309,185.16, 426,687.77 and 173,220.23 is: 239,050.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,185.16 : 426,687.77 = 173,220.23 : x
  2. Step 2: Convert to fraction form
    309,185.16/426,687.77 = 173,220.23/x
  3. Step 3: Cross multiply
    309,185.16x = 426,687.77 × 173,220.23
  4. Step 4: Simplify right side
    309,185.16x = 73,910,950,658.05
  5. Step 5: Solve for x
    x = 73,910,950,658.05/309,185.16
  6. Step 6: Final answer
    x = 239,050.77

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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.