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Finding the Fourth Proportional to 384,190.20, 538,653.60 and 384,190.20

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Solution

The fourth proportional to 384,190.20, 538,653.60 and 384,190.20 is: 538,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,190.20 : 538,653.60 = 384,190.20 : x
  2. Step 2: Convert to fraction form
    384,190.20/538,653.60 = 384,190.20/x
  3. Step 3: Cross multiply
    384,190.20x = 538,653.60 × 384,190.20
  4. Step 4: Simplify right side
    384,190.20x = 206,945,434,314.72
  5. Step 5: Solve for x
    x = 206,945,434,314.72/384,190.20
  6. Step 6: Final answer
    x = 538,653.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.