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Finding the Fourth Proportional to 500,308.28, 690,425.87 and 270,865.72

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Solution

The fourth proportional to 500,308.28, 690,425.87 and 270,865.72 is: 373,794.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,308.28 : 690,425.87 = 270,865.72 : x
  2. Step 2: Convert to fraction form
    500,308.28/690,425.87 = 270,865.72/x
  3. Step 3: Cross multiply
    500,308.28x = 690,425.87 × 270,865.72
  4. Step 4: Simplify right side
    500,308.28x = 187,012,700,384.18
  5. Step 5: Solve for x
    x = 187,012,700,384.18/500,308.28
  6. Step 6: Final answer
    x = 373,794.93

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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.