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Finding the Fourth Proportional to 203,962.40, 305,838.54 and 91,546.24

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Solution

The fourth proportional to 203,962.40, 305,838.54 and 91,546.24 is: 137,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,962.40 : 305,838.54 = 91,546.24 : x
  2. Step 2: Convert to fraction form
    203,962.40/305,838.54 = 91,546.24/x
  3. Step 3: Cross multiply
    203,962.40x = 305,838.54 × 91,546.24
  4. Step 4: Simplify right side
    203,962.40x = 27,998,368,384.09
  5. Step 5: Solve for x
    x = 27,998,368,384.09/203,962.40
  6. Step 6: Final answer
    x = 137,272.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.