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Finding the Fourth Proportional to 422,354.70, 633,538.53 and 141,874.38

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Solution

The fourth proportional to 422,354.70, 633,538.53 and 141,874.38 is: 212,813.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,354.70 : 633,538.53 = 141,874.38 : x
  2. Step 2: Convert to fraction form
    422,354.70/633,538.53 = 141,874.38/x
  3. Step 3: Cross multiply
    422,354.70x = 633,538.53 × 141,874.38
  4. Step 4: Simplify right side
    422,354.70x = 89,882,886,149.86
  5. Step 5: Solve for x
    x = 89,882,886,149.86/422,354.70
  6. Step 6: Final answer
    x = 212,813.75

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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.