Home / 257,739.92-386,483.39-105,909.49

Finding the Fourth Proportional to 257,739.92, 386,483.39 and 105,909.49

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Solution

The fourth proportional to 257,739.92, 386,483.39 and 105,909.49 is: 158,812.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,739.92 : 386,483.39 = 105,909.49 : x
  2. Step 2: Convert to fraction form
    257,739.92/386,483.39 = 105,909.49/x
  3. Step 3: Cross multiply
    257,739.92x = 386,483.39 × 105,909.49
  4. Step 4: Simplify right side
    257,739.92x = 40,932,257,232.62
  5. Step 5: Solve for x
    x = 40,932,257,232.62/257,739.92
  6. Step 6: Final answer
    x = 158,812.26

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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.