Home / 345,386.74-518,135.51-145,736.54

Finding the Fourth Proportional to 345,386.74, 518,135.51 and 145,736.54

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Solution

The fourth proportional to 345,386.74, 518,135.51 and 145,736.54 is: 218,628.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,386.74 : 518,135.51 = 145,736.54 : x
  2. Step 2: Convert to fraction form
    345,386.74/518,135.51 = 145,736.54/x
  3. Step 3: Cross multiply
    345,386.74x = 518,135.51 × 145,736.54
  4. Step 4: Simplify right side
    345,386.74x = 75,511,274,252.20
  5. Step 5: Solve for x
    x = 75,511,274,252.20/345,386.74
  6. Step 6: Final answer
    x = 218,628.18

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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.