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Finding the Fourth Proportional to 203,508.31, 280,858.28 and 112,893.49

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Solution

The fourth proportional to 203,508.31, 280,858.28 and 112,893.49 is: 155,802.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,508.31 : 280,858.28 = 112,893.49 : x
  2. Step 2: Convert to fraction form
    203,508.31/280,858.28 = 112,893.49/x
  3. Step 3: Cross multiply
    203,508.31x = 280,858.28 × 112,893.49
  4. Step 4: Simplify right side
    203,508.31x = 31,707,070,157.98
  5. Step 5: Solve for x
    x = 31,707,070,157.98/203,508.31
  6. Step 6: Final answer
    x = 155,802.34

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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.