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Finding the Fourth Proportional to 252,321.39, 378,417.60 and 74,786.90

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Solution

The fourth proportional to 252,321.39, 378,417.60 and 74,786.90 is: 112,161.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,321.39 : 378,417.60 = 74,786.90 : x
  2. Step 2: Convert to fraction form
    252,321.39/378,417.60 = 74,786.90/x
  3. Step 3: Cross multiply
    252,321.39x = 378,417.60 × 74,786.90
  4. Step 4: Simplify right side
    252,321.39x = 28,300,677,317.35
  5. Step 5: Solve for x
    x = 28,300,677,317.35/252,321.39
  6. Step 6: Final answer
    x = 112,161.23

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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.