Home / 422,931.21-634,644.67-170,172.33

Finding the Fourth Proportional to 422,931.21, 634,644.67 and 170,172.33

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Solution

The fourth proportional to 422,931.21, 634,644.67 and 170,172.33 is: 255,358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,931.21 : 634,644.67 = 170,172.33 : x
  2. Step 2: Convert to fraction form
    422,931.21/634,644.67 = 170,172.33/x
  3. Step 3: Cross multiply
    422,931.21x = 634,644.67 × 170,172.33
  4. Step 4: Simplify right side
    422,931.21x = 107,998,962,215.98
  5. Step 5: Solve for x
    x = 107,998,962,215.98/422,931.21
  6. Step 6: Final answer
    x = 255,358.22

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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.