Home / 278,890.87-384,871.82-151,566.49

Finding the Fourth Proportional to 278,890.87, 384,871.82 and 151,566.49

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Solution

The fourth proportional to 278,890.87, 384,871.82 and 151,566.49 is: 209,163.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,890.87 : 384,871.82 = 151,566.49 : x
  2. Step 2: Convert to fraction form
    278,890.87/384,871.82 = 151,566.49/x
  3. Step 3: Cross multiply
    278,890.87x = 384,871.82 × 151,566.49
  4. Step 4: Simplify right side
    278,890.87x = 58,333,670,857.31
  5. Step 5: Solve for x
    x = 58,333,670,857.31/278,890.87
  6. Step 6: Final answer
    x = 209,163.07

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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.