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Finding the Fourth Proportional to 203,496.21, 280,842.53 and 118,611.45

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Solution

The fourth proportional to 203,496.21, 280,842.53 and 118,611.45 is: 163,694.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,496.21 : 280,842.53 = 118,611.45 : x
  2. Step 2: Convert to fraction form
    203,496.21/280,842.53 = 118,611.45/x
  3. Step 3: Cross multiply
    203,496.21x = 280,842.53 × 118,611.45
  4. Step 4: Simplify right side
    203,496.21x = 33,311,139,111.91
  5. Step 5: Solve for x
    x = 33,311,139,111.91/203,496.21
  6. Step 6: Final answer
    x = 163,694.15

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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.