Home / 278,865.84-384,837.26-151,541.43

Finding the Fourth Proportional to 278,865.84, 384,837.26 and 151,541.43

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Solution

The fourth proportional to 278,865.84, 384,837.26 and 151,541.43 is: 209,128.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,865.84 : 384,837.26 = 151,541.43 : x
  2. Step 2: Convert to fraction form
    278,865.84/384,837.26 = 151,541.43/x
  3. Step 3: Cross multiply
    278,865.84x = 384,837.26 × 151,541.43
  4. Step 4: Simplify right side
    278,865.84x = 58,318,789,513.97
  5. Step 5: Solve for x
    x = 58,318,789,513.97/278,865.84
  6. Step 6: Final answer
    x = 209,128.48

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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.