Home / 419,636.24-579,090.72-228,651.20

Finding the Fourth Proportional to 419,636.24, 579,090.72 and 228,651.20

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Solution

The fourth proportional to 419,636.24, 579,090.72 and 228,651.20 is: 315,534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,636.24 : 579,090.72 = 228,651.20 : x
  2. Step 2: Convert to fraction form
    419,636.24/579,090.72 = 228,651.20/x
  3. Step 3: Cross multiply
    419,636.24x = 579,090.72 × 228,651.20
  4. Step 4: Simplify right side
    419,636.24x = 132,409,788,036.86
  5. Step 5: Solve for x
    x = 132,409,788,036.86/419,636.24
  6. Step 6: Final answer
    x = 315,534.68

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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.