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Finding the Fourth Proportional to 192,867.60, 289,344.60 and 74,528.40

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Solution

The fourth proportional to 192,867.60, 289,344.60 and 74,528.40 is: 111,809.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,867.60 : 289,344.60 = 74,528.40 : x
  2. Step 2: Convert to fraction form
    192,867.60/289,344.60 = 74,528.40/x
  3. Step 3: Cross multiply
    192,867.60x = 289,344.60 × 74,528.40
  4. Step 4: Simplify right side
    192,867.60x = 21,564,390,086.64
  5. Step 5: Solve for x
    x = 21,564,390,086.64/192,867.60
  6. Step 6: Final answer
    x = 111,809.29

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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.