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Finding the Fourth Proportional to 571,469.40, 857,568.60 and 272,287.80

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Solution

The fourth proportional to 571,469.40, 857,568.60 and 272,287.80 is: 408,605.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,469.40 : 857,568.60 = 272,287.80 : x
  2. Step 2: Convert to fraction form
    571,469.40/857,568.60 = 272,287.80/x
  3. Step 3: Cross multiply
    571,469.40x = 857,568.60 × 272,287.80
  4. Step 4: Simplify right side
    571,469.40x = 233,505,467,443.08
  5. Step 5: Solve for x
    x = 233,505,467,443.08/571,469.40
  6. Step 6: Final answer
    x = 408,605.37

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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.