Home / 419,386.90-578,749.94-228,403.48

Finding the Fourth Proportional to 419,386.90, 578,749.94 and 228,403.48

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Solution

The fourth proportional to 419,386.90, 578,749.94 and 228,403.48 is: 315,194.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,386.90 : 578,749.94 = 228,403.48 : x
  2. Step 2: Convert to fraction form
    419,386.90/578,749.94 = 228,403.48/x
  3. Step 3: Cross multiply
    419,386.90x = 578,749.94 × 228,403.48
  4. Step 4: Simplify right side
    419,386.90x = 132,188,499,203.77
  5. Step 5: Solve for x
    x = 132,188,499,203.77/419,386.90
  6. Step 6: Final answer
    x = 315,194.63

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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.