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Finding the Fourth Proportional to 384,103.80, 576,155.70 and 258,132.60

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Solution

The fourth proportional to 384,103.80, 576,155.70 and 258,132.60 is: 387,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,103.80 : 576,155.70 = 258,132.60 : x
  2. Step 2: Convert to fraction form
    384,103.80/576,155.70 = 258,132.60/x
  3. Step 3: Cross multiply
    384,103.80x = 576,155.70 × 258,132.60
  4. Step 4: Simplify right side
    384,103.80x = 148,724,568,845.82
  5. Step 5: Solve for x
    x = 148,724,568,845.82/384,103.80
  6. Step 6: Final answer
    x = 387,198.90

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1.5x scale

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.