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Finding the Fourth Proportional to 384,078.40, 576,117.60 and 218,190.40

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Solution

The fourth proportional to 384,078.40, 576,117.60 and 218,190.40 is: 327,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,078.40 : 576,117.60 = 218,190.40 : x
  2. Step 2: Convert to fraction form
    384,078.40/576,117.60 = 218,190.40/x
  3. Step 3: Cross multiply
    384,078.40x = 576,117.60 × 218,190.40
  4. Step 4: Simplify right side
    384,078.40x = 125,703,329,591.04
  5. Step 5: Solve for x
    x = 125,703,329,591.04/384,078.40
  6. Step 6: Final answer
    x = 327,285.60

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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.