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Finding the Fourth Proportional to 203,507.37, 280,821.62 and 112,863.06

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Solution

The fourth proportional to 203,507.37, 280,821.62 and 112,863.06 is: 155,740.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,507.37 : 280,821.62 = 112,863.06 : x
  2. Step 2: Convert to fraction form
    203,507.37/280,821.62 = 112,863.06/x
  3. Step 3: Cross multiply
    203,507.37x = 280,821.62 × 112,863.06
  4. Step 4: Simplify right side
    203,507.37x = 31,694,387,347.36
  5. Step 5: Solve for x
    x = 31,694,387,347.36/203,507.37
  6. Step 6: Final answer
    x = 155,740.73

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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.