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Finding the Fourth Proportional to 500,277.36, 690,390.36 and 273,943.92

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Solution

The fourth proportional to 500,277.36, 690,390.36 and 273,943.92 is: 378,046.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,277.36 : 690,390.36 = 273,943.92 : x
  2. Step 2: Convert to fraction form
    500,277.36/690,390.36 = 273,943.92/x
  3. Step 3: Cross multiply
    500,277.36x = 690,390.36 × 273,943.92
  4. Step 4: Simplify right side
    500,277.36x = 189,128,241,548.61
  5. Step 5: Solve for x
    x = 189,128,241,548.61/500,277.36
  6. Step 6: Final answer
    x = 378,046.77

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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.