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Finding the Fourth Proportional to 422,450.40, 633,450.96 and 156,142.56

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Solution

The fourth proportional to 422,450.40, 633,450.96 and 156,142.56 is: 234,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,450.40 : 633,450.96 = 156,142.56 : x
  2. Step 2: Convert to fraction form
    422,450.40/633,450.96 = 156,142.56/x
  3. Step 3: Cross multiply
    422,450.40x = 633,450.96 × 156,142.56
  4. Step 4: Simplify right side
    422,450.40x = 98,908,654,528.86
  5. Step 5: Solve for x
    x = 98,908,654,528.86/422,450.40
  6. Step 6: Final answer
    x = 234,130.81

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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.