Home / 306,398.03-422,713.28-190,057.66

Finding the Fourth Proportional to 306,398.03, 422,713.28 and 190,057.66

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Solution

The fourth proportional to 306,398.03, 422,713.28 and 190,057.66 is: 262,207.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,398.03 : 422,713.28 = 190,057.66 : x
  2. Step 2: Convert to fraction form
    306,398.03/422,713.28 = 190,057.66/x
  3. Step 3: Cross multiply
    306,398.03x = 422,713.28 × 190,057.66
  4. Step 4: Simplify right side
    306,398.03x = 80,339,896,266.09
  5. Step 5: Solve for x
    x = 80,339,896,266.09/306,398.03
  6. Step 6: Final answer
    x = 262,207.62

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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.