Home / 456,473.20-685,128.30-231,989.80

Finding the Fourth Proportional to 456,473.20, 685,128.30 and 231,989.80

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Solution

The fourth proportional to 456,473.20, 685,128.30 and 231,989.80 is: 348,197.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,473.20 : 685,128.30 = 231,989.80 : x
  2. Step 2: Convert to fraction form
    456,473.20/685,128.30 = 231,989.80/x
  3. Step 3: Cross multiply
    456,473.20x = 685,128.30 × 231,989.80
  4. Step 4: Simplify right side
    456,473.20x = 158,942,777,291.34
  5. Step 5: Solve for x
    x = 158,942,777,291.34/456,473.20
  6. Step 6: Final answer
    x = 348,197.39

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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.