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Finding the Fourth Proportional to 203,630.30, 281,005.52 and 112,984.31

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Solution

The fourth proportional to 203,630.30, 281,005.52 and 112,984.31 is: 155,915.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,630.30 : 281,005.52 = 112,984.31 : x
  2. Step 2: Convert to fraction form
    203,630.30/281,005.52 = 112,984.31/x
  3. Step 3: Cross multiply
    203,630.30x = 281,005.52 × 112,984.31
  4. Step 4: Simplify right side
    203,630.30x = 31,749,214,783.39
  5. Step 5: Solve for x
    x = 31,749,214,783.39/203,630.30
  6. Step 6: Final answer
    x = 155,915.97

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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.