Home / 257,907.23-386,916.12-77,977.27

Finding the Fourth Proportional to 257,907.23, 386,916.12 and 77,977.27

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Solution

The fourth proportional to 257,907.23, 386,916.12 and 77,977.27 is: 116,982.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,907.23 : 386,916.12 = 77,977.27 : x
  2. Step 2: Convert to fraction form
    257,907.23/386,916.12 = 77,977.27/x
  3. Step 3: Cross multiply
    257,907.23x = 386,916.12 × 77,977.27
  4. Step 4: Simplify right side
    257,907.23x = 30,170,661,789.30
  5. Step 5: Solve for x
    x = 30,170,661,789.30/257,907.23
  6. Step 6: Final answer
    x = 116,982.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.