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Finding the Fourth Proportional to 419,063.36, 628,578 and 103,512.32

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Solution

The fourth proportional to 419,063.36, 628,578 and 103,512.32 is: 155,264.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,063.36 : 628,578 = 103,512.32 : x
  2. Step 2: Convert to fraction form
    419,063.36/628,578 = 103,512.32/x
  3. Step 3: Cross multiply
    419,063.36x = 628,578 × 103,512.32
  4. Step 4: Simplify right side
    419,063.36x = 65,065,567,080.96
  5. Step 5: Solve for x
    x = 65,065,567,080.96/419,063.36
  6. Step 6: Final answer
    x = 155,264.27

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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.