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Finding the Fourth Proportional to 252,429.48, 378,579.42 and 74,894.49

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Solution

The fourth proportional to 252,429.48, 378,579.42 and 74,894.49 is: 112,322.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,429.48 : 378,579.42 = 74,894.49 : x
  2. Step 2: Convert to fraction form
    252,429.48/378,579.42 = 74,894.49/x
  3. Step 3: Cross multiply
    252,429.48x = 378,579.42 × 74,894.49
  4. Step 4: Simplify right side
    252,429.48x = 28,353,512,585.40
  5. Step 5: Solve for x
    x = 28,353,512,585.40/252,429.48
  6. Step 6: Final answer
    x = 112,322.51

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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.