Home / 280,131.76-386,577.26-159,270.45

Finding the Fourth Proportional to 280,131.76, 386,577.26 and 159,270.45

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Solution

The fourth proportional to 280,131.76, 386,577.26 and 159,270.45 is: 219,790.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,131.76 : 386,577.26 = 159,270.45 : x
  2. Step 2: Convert to fraction form
    280,131.76/386,577.26 = 159,270.45/x
  3. Step 3: Cross multiply
    280,131.76x = 386,577.26 × 159,270.45
  4. Step 4: Simplify right side
    280,131.76x = 61,570,332,511.21
  5. Step 5: Solve for x
    x = 61,570,332,511.21/280,131.76
  6. Step 6: Final answer
    x = 219,790.62

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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.