Home / 279,948.51-419,836.64-80,215.38

Finding the Fourth Proportional to 279,948.51, 419,836.64 and 80,215.38

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Solution

The fourth proportional to 279,948.51, 419,836.64 and 80,215.38 is: 120,298.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,948.51 : 419,836.64 = 80,215.38 : x
  2. Step 2: Convert to fraction form
    279,948.51/419,836.64 = 80,215.38/x
  3. Step 3: Cross multiply
    279,948.51x = 419,836.64 × 80,215.38
  4. Step 4: Simplify right side
    279,948.51x = 33,677,355,214.45
  5. Step 5: Solve for x
    x = 33,677,355,214.45/279,948.51
  6. Step 6: Final answer
    x = 120,298.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.