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Finding the Fourth Proportional to 422,790.63, 634,197.48 and 123,263.97

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Solution

The fourth proportional to 422,790.63, 634,197.48 and 123,263.97 is: 184,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,790.63 : 634,197.48 = 123,263.97 : x
  2. Step 2: Convert to fraction form
    422,790.63/634,197.48 = 123,263.97/x
  3. Step 3: Cross multiply
    422,790.63x = 634,197.48 × 123,263.97
  4. Step 4: Simplify right side
    422,790.63x = 78,173,695,977.81
  5. Step 5: Solve for x
    x = 78,173,695,977.81/422,790.63
  6. Step 6: Final answer
    x = 184,899.31

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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.