Home / 389,992-584,914.02-190,111.36

Finding the Fourth Proportional to 389,992, 584,914.02 and 190,111.36

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Solution

The fourth proportional to 389,992, 584,914.02 and 190,111.36 is: 285,130.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,992 : 584,914.02 = 190,111.36 : x
  2. Step 2: Convert to fraction form
    389,992/584,914.02 = 190,111.36/x
  3. Step 3: Cross multiply
    389,992x = 584,914.02 × 190,111.36
  4. Step 4: Simplify right side
    389,992x = 111,198,799,825.27
  5. Step 5: Solve for x
    x = 111,198,799,825.27/389,992
  6. Step 6: Final answer
    x = 285,130.98

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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.