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Finding the Fourth Proportional to 259,270.40, 388,905.60 and 161,924.60

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Solution

The fourth proportional to 259,270.40, 388,905.60 and 161,924.60 is: 242,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,270.40 : 388,905.60 = 161,924.60 : x
  2. Step 2: Convert to fraction form
    259,270.40/388,905.60 = 161,924.60/x
  3. Step 3: Cross multiply
    259,270.40x = 388,905.60 × 161,924.60
  4. Step 4: Simplify right side
    259,270.40x = 62,973,383,717.76
  5. Step 5: Solve for x
    x = 62,973,383,717.76/259,270.40
  6. Step 6: Final answer
    x = 242,886.90

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1.5x scale

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.