Home / 419,739.78-579,226.23-228,749.34

Finding the Fourth Proportional to 419,739.78, 579,226.23 and 228,749.34

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Solution

The fourth proportional to 419,739.78, 579,226.23 and 228,749.34 is: 315,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,739.78 : 579,226.23 = 228,749.34 : x
  2. Step 2: Convert to fraction form
    419,739.78/579,226.23 = 228,749.34/x
  3. Step 3: Cross multiply
    419,739.78x = 579,226.23 × 228,749.34
  4. Step 4: Simplify right side
    419,739.78x = 132,497,617,823.19
  5. Step 5: Solve for x
    x = 132,497,617,823.19/419,739.78
  6. Step 6: Final answer
    x = 315,666.10

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1.5x scale

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.