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Finding the Fourth Proportional to 393,648.20, 590,472.30 and 367,209.80

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Solution

The fourth proportional to 393,648.20, 590,472.30 and 367,209.80 is: 550,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,648.20 : 590,472.30 = 367,209.80 : x
  2. Step 2: Convert to fraction form
    393,648.20/590,472.30 = 367,209.80/x
  3. Step 3: Cross multiply
    393,648.20x = 590,472.30 × 367,209.80
  4. Step 4: Simplify right side
    393,648.20x = 216,827,215,188.54
  5. Step 5: Solve for x
    x = 216,827,215,188.54/393,648.20
  6. Step 6: Final answer
    x = 550,814.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.