Home / 278,865.75-418,223.82-121,056.69

Finding the Fourth Proportional to 278,865.75, 418,223.82 and 121,056.69

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Solution

The fourth proportional to 278,865.75, 418,223.82 and 121,056.69 is: 181,552.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,865.75 : 418,223.82 = 121,056.69 : x
  2. Step 2: Convert to fraction form
    278,865.75/418,223.82 = 121,056.69/x
  3. Step 3: Cross multiply
    278,865.75x = 418,223.82 × 121,056.69
  4. Step 4: Simplify right side
    278,865.75x = 50,628,791,328.36
  5. Step 5: Solve for x
    x = 50,628,791,328.36/278,865.75
  6. Step 6: Final answer
    x = 181,552.56

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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.