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Finding the Fourth Proportional to 500,283.36, 690,398.64 and 273,949.92

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Solution

The fourth proportional to 500,283.36, 690,398.64 and 273,949.92 is: 378,055.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,283.36 : 690,398.64 = 273,949.92 : x
  2. Step 2: Convert to fraction form
    500,283.36/690,398.64 = 273,949.92/x
  3. Step 3: Cross multiply
    500,283.36x = 690,398.64 × 273,949.92
  4. Step 4: Simplify right side
    500,283.36x = 189,134,652,196.11
  5. Step 5: Solve for x
    x = 189,134,652,196.11/500,283.36
  6. Step 6: Final answer
    x = 378,055.05

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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.