Home / 306,745.32-422,946.34-209,995.72

Finding the Fourth Proportional to 306,745.32, 422,946.34 and 209,995.72

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Solution

The fourth proportional to 306,745.32, 422,946.34 and 209,995.72 is: 289,546.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,745.32 : 422,946.34 = 209,995.72 : x
  2. Step 2: Convert to fraction form
    306,745.32/422,946.34 = 209,995.72/x
  3. Step 3: Cross multiply
    306,745.32x = 422,946.34 × 209,995.72
  4. Step 4: Simplify right side
    306,745.32x = 88,816,921,189.66
  5. Step 5: Solve for x
    x = 88,816,921,189.66/306,745.32
  6. Step 6: Final answer
    x = 289,546.13

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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.