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Finding the Fourth Proportional to 268,785.60, 403,005.60 and 111,076.80

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Solution

The fourth proportional to 268,785.60, 403,005.60 and 111,076.80 is: 166,543.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,785.60 : 403,005.60 = 111,076.80 : x
  2. Step 2: Convert to fraction form
    268,785.60/403,005.60 = 111,076.80/x
  3. Step 3: Cross multiply
    268,785.60x = 403,005.60 × 111,076.80
  4. Step 4: Simplify right side
    268,785.60x = 44,764,572,430.08
  5. Step 5: Solve for x
    x = 44,764,572,430.08/268,785.60
  6. Step 6: Final answer
    x = 166,543.79

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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.