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Finding the Fourth Proportional to 280,188.69, 386,644.62 and 159,359.37

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Solution

The fourth proportional to 280,188.69, 386,644.62 and 159,359.37 is: 219,906.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,188.69 : 386,644.62 = 159,359.37 : x
  2. Step 2: Convert to fraction form
    280,188.69/386,644.62 = 159,359.37/x
  3. Step 3: Cross multiply
    280,188.69x = 386,644.62 × 159,359.37
  4. Step 4: Simplify right side
    280,188.69x = 61,615,443,057.09
  5. Step 5: Solve for x
    x = 61,615,443,057.09/280,188.69
  6. Step 6: Final answer
    x = 219,906.96

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1.5x scale

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.