Home / 419,622.49-579,071.75-228,637.45

Finding the Fourth Proportional to 419,622.49, 579,071.75 and 228,637.45

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Solution

The fourth proportional to 419,622.49, 579,071.75 and 228,637.45 is: 315,515.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,622.49 : 579,071.75 = 228,637.45 : x
  2. Step 2: Convert to fraction form
    419,622.49/579,071.75 = 228,637.45/x
  3. Step 3: Cross multiply
    419,622.49x = 579,071.75 × 228,637.45
  4. Step 4: Simplify right side
    419,622.49x = 132,397,487,143.85
  5. Step 5: Solve for x
    x = 132,397,487,143.85/419,622.49
  6. Step 6: Final answer
    x = 315,515.71

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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.