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Finding the Fourth Proportional to 203,678.28, 305,444.52 and 70,522.79

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Solution

The fourth proportional to 203,678.28, 305,444.52 and 70,522.79 is: 105,758.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,678.28 : 305,444.52 = 70,522.79 : x
  2. Step 2: Convert to fraction form
    203,678.28/305,444.52 = 70,522.79/x
  3. Step 3: Cross multiply
    203,678.28x = 305,444.52 × 70,522.79
  4. Step 4: Simplify right side
    203,678.28x = 21,540,798,213.39
  5. Step 5: Solve for x
    x = 21,540,798,213.39/203,678.28
  6. Step 6: Final answer
    x = 105,758.94

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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.