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Finding the Fourth Proportional to 248,761.40, 372,731.70 and 143,396.60

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Solution

The fourth proportional to 248,761.40, 372,731.70 and 143,396.60 is: 214,858.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,761.40 : 372,731.70 = 143,396.60 : x
  2. Step 2: Convert to fraction form
    248,761.40/372,731.70 = 143,396.60/x
  3. Step 3: Cross multiply
    248,761.40x = 372,731.70 × 143,396.60
  4. Step 4: Simplify right side
    248,761.40x = 53,448,458,492.22
  5. Step 5: Solve for x
    x = 53,448,458,492.22/248,761.40
  6. Step 6: Final answer
    x = 214,858.33

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1.5x scale

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.