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Finding the Fourth Proportional to 444,007.20, 666,010.80 and 257,383.20

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Solution

The fourth proportional to 444,007.20, 666,010.80 and 257,383.20 is: 386,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,007.20 : 666,010.80 = 257,383.20 : x
  2. Step 2: Convert to fraction form
    444,007.20/666,010.80 = 257,383.20/x
  3. Step 3: Cross multiply
    444,007.20x = 666,010.80 × 257,383.20
  4. Step 4: Simplify right side
    444,007.20x = 171,419,990,938.56
  5. Step 5: Solve for x
    x = 171,419,990,938.56/444,007.20
  6. Step 6: Final answer
    x = 386,074.80

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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.