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Finding the Fourth Proportional to 483,286.40, 724,238.40 and 355,932.80

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Solution

The fourth proportional to 483,286.40, 724,238.40 and 355,932.80 is: 533,390.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,286.40 : 724,238.40 = 355,932.80 : x
  2. Step 2: Convert to fraction form
    483,286.40/724,238.40 = 355,932.80/x
  3. Step 3: Cross multiply
    483,286.40x = 724,238.40 × 355,932.80
  4. Step 4: Simplify right side
    483,286.40x = 257,780,201,579.52
  5. Step 5: Solve for x
    x = 257,780,201,579.52/483,286.40
  6. Step 6: Final answer
    x = 533,390.14

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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.