Home / 430,971.03-646,456.14-115,419.33

Finding the Fourth Proportional to 430,971.03, 646,456.14 and 115,419.33

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Solution

The fourth proportional to 430,971.03, 646,456.14 and 115,419.33 is: 173,128.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,971.03 : 646,456.14 = 115,419.33 : x
  2. Step 2: Convert to fraction form
    430,971.03/646,456.14 = 115,419.33/x
  3. Step 3: Cross multiply
    430,971.03x = 646,456.14 × 115,419.33
  4. Step 4: Simplify right side
    430,971.03x = 74,613,534,553.19
  5. Step 5: Solve for x
    x = 74,613,534,553.19/430,971.03
  6. Step 6: Final answer
    x = 173,128.89

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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.