Home / 419,505.05-578,914.01-228,518.45

Finding the Fourth Proportional to 419,505.05, 578,914.01 and 228,518.45

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Solution

The fourth proportional to 419,505.05, 578,914.01 and 228,518.45 is: 315,353.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,505.05 : 578,914.01 = 228,518.45 : x
  2. Step 2: Convert to fraction form
    419,505.05/578,914.01 = 228,518.45/x
  3. Step 3: Cross multiply
    419,505.05x = 578,914.01 × 228,518.45
  4. Step 4: Simplify right side
    419,505.05x = 132,292,531,239.19
  5. Step 5: Solve for x
    x = 132,292,531,239.19/419,505.05
  6. Step 6: Final answer
    x = 315,353.84

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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.