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Finding the Fourth Proportional to 203,245.98, 280,456.75 and 112,579.45

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Solution

The fourth proportional to 203,245.98, 280,456.75 and 112,579.45 is: 155,347.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,245.98 : 280,456.75 = 112,579.45 : x
  2. Step 2: Convert to fraction form
    203,245.98/280,456.75 = 112,579.45/x
  3. Step 3: Cross multiply
    203,245.98x = 280,456.75 × 112,579.45
  4. Step 4: Simplify right side
    203,245.98x = 31,573,665,261.50
  5. Step 5: Solve for x
    x = 31,573,665,261.50/203,245.98
  6. Step 6: Final answer
    x = 155,347.06

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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.