Home / 278,745.28-384,669.12-151,418.08

Finding the Fourth Proportional to 278,745.28, 384,669.12 and 151,418.08

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Solution

The fourth proportional to 278,745.28, 384,669.12 and 151,418.08 is: 208,957.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,745.28 : 384,669.12 = 151,418.08 : x
  2. Step 2: Convert to fraction form
    278,745.28/384,669.12 = 151,418.08/x
  3. Step 3: Cross multiply
    278,745.28x = 384,669.12 × 151,418.08
  4. Step 4: Simplify right side
    278,745.28x = 58,245,859,585.69
  5. Step 5: Solve for x
    x = 58,245,859,585.69/278,745.28
  6. Step 6: Final answer
    x = 208,957.29

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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.