Home / 278,634.51-384,512.22-151,311

Finding the Fourth Proportional to 278,634.51, 384,512.22 and 151,311

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Solution

The fourth proportional to 278,634.51, 384,512.22 and 151,311 is: 208,807.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,634.51 : 384,512.22 = 151,311 : x
  2. Step 2: Convert to fraction form
    278,634.51/384,512.22 = 151,311/x
  3. Step 3: Cross multiply
    278,634.51x = 384,512.22 × 151,311
  4. Step 4: Simplify right side
    278,634.51x = 58,180,928,520.42
  5. Step 5: Solve for x
    x = 58,180,928,520.42/278,634.51
  6. Step 6: Final answer
    x = 208,807.33

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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.