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Finding the Fourth Proportional to 500,295.36, 690,415.20 and 273,961.92

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Solution

The fourth proportional to 500,295.36, 690,415.20 and 273,961.92 is: 378,071.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,295.36 : 690,415.20 = 273,961.92 : x
  2. Step 2: Convert to fraction form
    500,295.36/690,415.20 = 273,961.92/x
  3. Step 3: Cross multiply
    500,295.36x = 690,415.20 × 273,961.92
  4. Step 4: Simplify right side
    500,295.36x = 189,147,473,789.18
  5. Step 5: Solve for x
    x = 189,147,473,789.18/500,295.36
  6. Step 6: Final answer
    x = 378,071.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.