Home / 257,984.82-386,979.39-71,006.58

Finding the Fourth Proportional to 257,984.82, 386,979.39 and 71,006.58

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Solution

The fourth proportional to 257,984.82, 386,979.39 and 71,006.58 is: 106,510.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,984.82 : 386,979.39 = 71,006.58 : x
  2. Step 2: Convert to fraction form
    257,984.82/386,979.39 = 71,006.58/x
  3. Step 3: Cross multiply
    257,984.82x = 386,979.39 × 71,006.58
  4. Step 4: Simplify right side
    257,984.82x = 27,478,083,014.39
  5. Step 5: Solve for x
    x = 27,478,083,014.39/257,984.82
  6. Step 6: Final answer
    x = 106,510.46

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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.