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Finding the Fourth Proportional to 422,972.73, 634,205.65 and 134,659.77

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Solution

The fourth proportional to 422,972.73, 634,205.65 and 134,659.77 is: 201,908.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,972.73 : 634,205.65 = 134,659.77 : x
  2. Step 2: Convert to fraction form
    422,972.73/634,205.65 = 134,659.77/x
  3. Step 3: Cross multiply
    422,972.73x = 634,205.65 × 134,659.77
  4. Step 4: Simplify right side
    422,972.73x = 85,401,984,246.78
  5. Step 5: Solve for x
    x = 85,401,984,246.78/422,972.73
  6. Step 6: Final answer
    x = 201,908.96

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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.