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Finding the Fourth Proportional to 422,750.40, 634,154.40 and 134,539.20

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Solution

The fourth proportional to 422,750.40, 634,154.40 and 134,539.20 is: 201,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,750.40 : 634,154.40 = 134,539.20 : x
  2. Step 2: Convert to fraction form
    422,750.40/634,154.40 = 134,539.20/x
  3. Step 3: Cross multiply
    422,750.40x = 634,154.40 × 134,539.20
  4. Step 4: Simplify right side
    422,750.40x = 85,318,625,652.48
  5. Step 5: Solve for x
    x = 85,318,625,652.48/422,750.40
  6. Step 6: Final answer
    x = 201,817.97

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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.