Home / 306,217.32-422,663.04-198,781.08

Finding the Fourth Proportional to 306,217.32, 422,663.04 and 198,781.08

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Solution

The fourth proportional to 306,217.32, 422,663.04 and 198,781.08 is: 274,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,217.32 : 422,663.04 = 198,781.08 : x
  2. Step 2: Convert to fraction form
    306,217.32/422,663.04 = 198,781.08/x
  3. Step 3: Cross multiply
    306,217.32x = 422,663.04 × 198,781.08
  4. Step 4: Simplify right side
    306,217.32x = 84,017,415,567.28
  5. Step 5: Solve for x
    x = 84,017,415,567.28/306,217.32
  6. Step 6: Final answer
    x = 274,371.86

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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.