Home / 345,412.41-518,188.46-145,733.28

Finding the Fourth Proportional to 345,412.41, 518,188.46 and 145,733.28

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Solution

The fourth proportional to 345,412.41, 518,188.46 and 145,733.28 is: 218,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,412.41 : 518,188.46 = 145,733.28 : x
  2. Step 2: Convert to fraction form
    345,412.41/518,188.46 = 145,733.28/x
  3. Step 3: Cross multiply
    345,412.41x = 518,188.46 × 145,733.28
  4. Step 4: Simplify right side
    345,412.41x = 75,517,303,205.28
  5. Step 5: Solve for x
    x = 75,517,303,205.28/345,412.41
  6. Step 6: Final answer
    x = 218,629.39

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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.