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Finding the Fourth Proportional to 278,898.10, 384,882.36 and 151,573.70

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Solution

The fourth proportional to 278,898.10, 384,882.36 and 151,573.70 is: 209,173.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,898.10 : 384,882.36 = 151,573.70 : x
  2. Step 2: Convert to fraction form
    278,898.10/384,882.36 = 151,573.70/x
  3. Step 3: Cross multiply
    278,898.10x = 384,882.36 × 151,573.70
  4. Step 4: Simplify right side
    278,898.10x = 58,338,043,369.93
  5. Step 5: Solve for x
    x = 58,338,043,369.93/278,898.10
  6. Step 6: Final answer
    x = 209,173.33

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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.