Home / 345,838.41-518,991.30-121,201.11

Finding the Fourth Proportional to 345,838.41, 518,991.30 and 121,201.11

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Solution

The fourth proportional to 345,838.41, 518,991.30 and 121,201.11 is: 181,883.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,838.41 : 518,991.30 = 121,201.11 : x
  2. Step 2: Convert to fraction form
    345,838.41/518,991.30 = 121,201.11/x
  3. Step 3: Cross multiply
    345,838.41x = 518,991.30 × 121,201.11
  4. Step 4: Simplify right side
    345,838.41x = 62,902,321,640.34
  5. Step 5: Solve for x
    x = 62,902,321,640.34/345,838.41
  6. Step 6: Final answer
    x = 181,883.56

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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.