Home / 279,048.12-418,562.82-121,276.56

Finding the Fourth Proportional to 279,048.12, 418,562.82 and 121,276.56

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Solution

The fourth proportional to 279,048.12, 418,562.82 and 121,276.56 is: 181,910.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,048.12 : 418,562.82 = 121,276.56 : x
  2. Step 2: Convert to fraction form
    279,048.12/418,562.82 = 121,276.56/x
  3. Step 3: Cross multiply
    279,048.12x = 418,562.82 × 121,276.56
  4. Step 4: Simplify right side
    279,048.12x = 50,761,858,953.50
  5. Step 5: Solve for x
    x = 50,761,858,953.50/279,048.12
  6. Step 6: Final answer
    x = 181,910.77

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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.