Home / 285,311.54-393,725.11-157,984.40

Finding the Fourth Proportional to 285,311.54, 393,725.11 and 157,984.40

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Solution

The fourth proportional to 285,311.54, 393,725.11 and 157,984.40 is: 218,015.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,311.54 : 393,725.11 = 157,984.40 : x
  2. Step 2: Convert to fraction form
    285,311.54/393,725.11 = 157,984.40/x
  3. Step 3: Cross multiply
    285,311.54x = 393,725.11 × 157,984.40
  4. Step 4: Simplify right side
    285,311.54x = 62,202,425,268.28
  5. Step 5: Solve for x
    x = 62,202,425,268.28/285,311.54
  6. Step 6: Final answer
    x = 218,015.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.