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Finding the Fourth Proportional to 500,245.47, 690,167.39 and 285,230.97

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Solution

The fourth proportional to 500,245.47, 690,167.39 and 285,230.97 is: 393,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,245.47 : 690,167.39 = 285,230.97 : x
  2. Step 2: Convert to fraction form
    500,245.47/690,167.39 = 285,230.97/x
  3. Step 3: Cross multiply
    500,245.47x = 690,167.39 × 285,230.97
  4. Step 4: Simplify right side
    500,245.47x = 196,857,112,685.91
  5. Step 5: Solve for x
    x = 196,857,112,685.91/500,245.47
  6. Step 6: Final answer
    x = 393,521.03

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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.