Home / 427,371.36-641,090.76-143,063.60

Finding the Fourth Proportional to 427,371.36, 641,090.76 and 143,063.60

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Solution

The fourth proportional to 427,371.36, 641,090.76 and 143,063.60 is: 214,606.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,371.36 : 641,090.76 = 143,063.60 : x
  2. Step 2: Convert to fraction form
    427,371.36/641,090.76 = 143,063.60/x
  3. Step 3: Cross multiply
    427,371.36x = 641,090.76 × 143,063.60
  4. Step 4: Simplify right side
    427,371.36x = 91,716,752,052.34
  5. Step 5: Solve for x
    x = 91,716,752,052.34/427,371.36
  6. Step 6: Final answer
    x = 214,606.69

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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.