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Finding the Fourth Proportional to 268,858.40, 403,433.40 and 111,102.80

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Solution

The fourth proportional to 268,858.40, 403,433.40 and 111,102.80 is: 166,714.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,858.40 : 403,433.40 = 111,102.80 : x
  2. Step 2: Convert to fraction form
    268,858.40/403,433.40 = 111,102.80/x
  3. Step 3: Cross multiply
    268,858.40x = 403,433.40 × 111,102.80
  4. Step 4: Simplify right side
    268,858.40x = 44,822,580,353.52
  5. Step 5: Solve for x
    x = 44,822,580,353.52/268,858.40
  6. Step 6: Final answer
    x = 166,714.45

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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.