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Finding the Fourth Proportional to 557,660.40, 835,324.20 and 308,050.80

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Solution

The fourth proportional to 557,660.40, 835,324.20 and 308,050.80 is: 461,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,660.40 : 835,324.20 = 308,050.80 : x
  2. Step 2: Convert to fraction form
    557,660.40/835,324.20 = 308,050.80/x
  3. Step 3: Cross multiply
    557,660.40x = 835,324.20 × 308,050.80
  4. Step 4: Simplify right side
    557,660.40x = 257,322,288,069.36
  5. Step 5: Solve for x
    x = 257,322,288,069.36/557,660.40
  6. Step 6: Final answer
    x = 461,431.88

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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.