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Finding the Fourth Proportional to 500,290.28, 690,393.72 and 273,935.76

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Solution

The fourth proportional to 500,290.28, 690,393.72 and 273,935.76 is: 378,027.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,290.28 : 690,393.72 = 273,935.76 : x
  2. Step 2: Convert to fraction form
    500,290.28/690,393.72 = 273,935.76/x
  3. Step 3: Cross multiply
    500,290.28x = 690,393.72 × 273,935.76
  4. Step 4: Simplify right side
    500,290.28x = 189,123,528,387.43
  5. Step 5: Solve for x
    x = 189,123,528,387.43/500,290.28
  6. Step 6: Final answer
    x = 378,027.59

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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.