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Finding the Fourth Proportional to 268,846.40, 403,415.40 and 111,090.80

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Solution

The fourth proportional to 268,846.40, 403,415.40 and 111,090.80 is: 166,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,846.40 : 403,415.40 = 111,090.80 : x
  2. Step 2: Convert to fraction form
    268,846.40/403,415.40 = 111,090.80/x
  3. Step 3: Cross multiply
    268,846.40x = 403,415.40 × 111,090.80
  4. Step 4: Simplify right side
    268,846.40x = 44,815,739,518.32
  5. Step 5: Solve for x
    x = 44,815,739,518.32/268,846.40
  6. Step 6: Final answer
    x = 166,696.45

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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.