Home / 419,971.60-579,546.36-238,680.36

Finding the Fourth Proportional to 419,971.60, 579,546.36 and 238,680.36

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Solution

The fourth proportional to 419,971.60, 579,546.36 and 238,680.36 is: 329,370.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,971.60 : 579,546.36 = 238,680.36 : x
  2. Step 2: Convert to fraction form
    419,971.60/579,546.36 = 238,680.36/x
  3. Step 3: Cross multiply
    419,971.60x = 579,546.36 × 238,680.36
  4. Step 4: Simplify right side
    419,971.60x = 138,326,333,841.49
  5. Step 5: Solve for x
    x = 138,326,333,841.49/419,971.60
  6. Step 6: Final answer
    x = 329,370.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.