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Finding the Fourth Proportional to 422,834.73, 634,345.41 and 123,338.76

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Solution

The fourth proportional to 422,834.73, 634,345.41 and 123,338.76 is: 185,035.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,834.73 : 634,345.41 = 123,338.76 : x
  2. Step 2: Convert to fraction form
    422,834.73/634,345.41 = 123,338.76/x
  3. Step 3: Cross multiply
    422,834.73x = 634,345.41 × 123,338.76
  4. Step 4: Simplify right side
    422,834.73x = 78,239,376,281.09
  5. Step 5: Solve for x
    x = 78,239,376,281.09/422,834.73
  6. Step 6: Final answer
    x = 185,035.36

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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.