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Finding the Fourth Proportional to 321,930.40, 444,268.80 and 178,699.60

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Solution

The fourth proportional to 321,930.40, 444,268.80 and 178,699.60 is: 246,608.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,930.40 : 444,268.80 = 178,699.60 : x
  2. Step 2: Convert to fraction form
    321,930.40/444,268.80 = 178,699.60/x
  3. Step 3: Cross multiply
    321,930.40x = 444,268.80 × 178,699.60
  4. Step 4: Simplify right side
    321,930.40x = 79,390,656,852.48
  5. Step 5: Solve for x
    x = 79,390,656,852.48/321,930.40
  6. Step 6: Final answer
    x = 246,608.14

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1.5x scale

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.