Home / 278,999.06-385,021.94-154,822.58

Finding the Fourth Proportional to 278,999.06, 385,021.94 and 154,822.58

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Solution

The fourth proportional to 278,999.06, 385,021.94 and 154,822.58 is: 213,656.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,999.06 : 385,021.94 = 154,822.58 : x
  2. Step 2: Convert to fraction form
    278,999.06/385,021.94 = 154,822.58/x
  3. Step 3: Cross multiply
    278,999.06x = 385,021.94 × 154,822.58
  4. Step 4: Simplify right side
    278,999.06x = 59,610,090,295.85
  5. Step 5: Solve for x
    x = 59,610,090,295.85/278,999.06
  6. Step 6: Final answer
    x = 213,656.96

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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.