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Finding the Fourth Proportional to 384,372.74, 576,365.56 and 128,114.56

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Solution

The fourth proportional to 384,372.74, 576,365.56 and 128,114.56 is: 192,107.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,372.74 : 576,365.56 = 128,114.56 : x
  2. Step 2: Convert to fraction form
    384,372.74/576,365.56 = 128,114.56/x
  3. Step 3: Cross multiply
    384,372.74x = 576,365.56 × 128,114.56
  4. Step 4: Simplify right side
    384,372.74x = 73,840,820,518.72
  5. Step 5: Solve for x
    x = 73,840,820,518.72/384,372.74
  6. Step 6: Final answer
    x = 192,107.33

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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.