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Finding the Fourth Proportional to 235,396.80, 352,983.96 and 85,532.58

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Solution

The fourth proportional to 235,396.80, 352,983.96 and 85,532.58 is: 128,258.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,396.80 : 352,983.96 = 85,532.58 : x
  2. Step 2: Convert to fraction form
    235,396.80/352,983.96 = 85,532.58/x
  3. Step 3: Cross multiply
    235,396.80x = 352,983.96 × 85,532.58
  4. Step 4: Simplify right side
    235,396.80x = 30,191,628,797.42
  5. Step 5: Solve for x
    x = 30,191,628,797.42/235,396.80
  6. Step 6: Final answer
    x = 128,258.45

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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.