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Finding the Fourth Proportional to 203,376.96, 280,493.82 and 143,146.98

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Solution

The fourth proportional to 203,376.96, 280,493.82 and 143,146.98 is: 197,425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,376.96 : 280,493.82 = 143,146.98 : x
  2. Step 2: Convert to fraction form
    203,376.96/280,493.82 = 143,146.98/x
  3. Step 3: Cross multiply
    203,376.96x = 280,493.82 × 143,146.98
  4. Step 4: Simplify right side
    203,376.96x = 40,151,843,241.66
  5. Step 5: Solve for x
    x = 40,151,843,241.66/203,376.96
  6. Step 6: Final answer
    x = 197,425.72

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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.