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Finding the Fourth Proportional to 422,610.21, 634,478.40 and 245,244.51

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Solution

The fourth proportional to 422,610.21, 634,478.40 and 245,244.51 is: 368,193.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,610.21 : 634,478.40 = 245,244.51 : x
  2. Step 2: Convert to fraction form
    422,610.21/634,478.40 = 245,244.51/x
  3. Step 3: Cross multiply
    422,610.21x = 634,478.40 × 245,244.51
  4. Step 4: Simplify right side
    422,610.21x = 155,602,344,313.58
  5. Step 5: Solve for x
    x = 155,602,344,313.58/422,610.21
  6. Step 6: Final answer
    x = 368,193.53

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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.