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Finding the Fourth Proportional to 384,352.54, 576,469.68 and 128,189.64

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Solution

The fourth proportional to 384,352.54, 576,469.68 and 128,189.64 is: 192,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,352.54 : 576,469.68 = 128,189.64 : x
  2. Step 2: Convert to fraction form
    384,352.54/576,469.68 = 128,189.64/x
  3. Step 3: Cross multiply
    384,352.54x = 576,469.68 × 128,189.64
  4. Step 4: Simplify right side
    384,352.54x = 73,897,437,867.77
  5. Step 5: Solve for x
    x = 73,897,437,867.77/384,352.54
  6. Step 6: Final answer
    x = 192,264.73

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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.