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Finding the Fourth Proportional to 259,171.20, 388,929.60 and 118,857.60

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Solution

The fourth proportional to 259,171.20, 388,929.60 and 118,857.60 is: 178,365.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,171.20 : 388,929.60 = 118,857.60 : x
  2. Step 2: Convert to fraction form
    259,171.20/388,929.60 = 118,857.60/x
  3. Step 3: Cross multiply
    259,171.20x = 388,929.60 × 118,857.60
  4. Step 4: Simplify right side
    259,171.20x = 46,227,238,824.96
  5. Step 5: Solve for x
    x = 46,227,238,824.96/259,171.20
  6. Step 6: Final answer
    x = 178,365.65

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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.