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Finding the Fourth Proportional to 203,677.28, 305,443.02 and 70,521.80

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Solution

The fourth proportional to 203,677.28, 305,443.02 and 70,521.80 is: 105,757.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,677.28 : 305,443.02 = 70,521.80 : x
  2. Step 2: Convert to fraction form
    203,677.28/305,443.02 = 70,521.80/x
  3. Step 3: Cross multiply
    203,677.28x = 305,443.02 × 70,521.80
  4. Step 4: Simplify right side
    203,677.28x = 21,540,391,567.84
  5. Step 5: Solve for x
    x = 21,540,391,567.84/203,677.28
  6. Step 6: Final answer
    x = 105,757.46

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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.