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Finding the Fourth Proportional to 285,250.76, 427,858.86 and 74,884.04

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Solution

The fourth proportional to 285,250.76, 427,858.86 and 74,884.04 is: 112,321.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,250.76 : 427,858.86 = 74,884.04 : x
  2. Step 2: Convert to fraction form
    285,250.76/427,858.86 = 74,884.04/x
  3. Step 3: Cross multiply
    285,250.76x = 427,858.86 × 74,884.04
  4. Step 4: Simplify right side
    285,250.76x = 32,039,799,986.59
  5. Step 5: Solve for x
    x = 32,039,799,986.59/285,250.76
  6. Step 6: Final answer
    x = 112,321.52

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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.