Home / 422,975.96-634,434.36-198,385.64

Finding the Fourth Proportional to 422,975.96, 634,434.36 and 198,385.64

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Solution

The fourth proportional to 422,975.96, 634,434.36 and 198,385.64 is: 297,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,975.96 : 634,434.36 = 198,385.64 : x
  2. Step 2: Convert to fraction form
    422,975.96/634,434.36 = 198,385.64/x
  3. Step 3: Cross multiply
    422,975.96x = 634,434.36 × 198,385.64
  4. Step 4: Simplify right side
    422,975.96x = 125,862,666,546.59
  5. Step 5: Solve for x
    x = 125,862,666,546.59/422,975.96
  6. Step 6: Final answer
    x = 297,564.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.