Home / 345,825.91-518,784.23-135,436.51

Finding the Fourth Proportional to 345,825.91, 518,784.23 and 135,436.51

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Solution

The fourth proportional to 345,825.91, 518,784.23 and 135,436.51 is: 203,172.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,825.91 : 518,784.23 = 135,436.51 : x
  2. Step 2: Convert to fraction form
    345,825.91/518,784.23 = 135,436.51/x
  3. Step 3: Cross multiply
    345,825.91x = 518,784.23 × 135,436.51
  4. Step 4: Simplify right side
    345,825.91x = 70,262,324,877.05
  5. Step 5: Solve for x
    x = 70,262,324,877.05/345,825.91
  6. Step 6: Final answer
    x = 203,172.53

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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.