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Finding the Fourth Proportional to 252,911.52, 379,079.28 and 84,392.28

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Solution

The fourth proportional to 252,911.52, 379,079.28 and 84,392.28 is: 126,492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,911.52 : 379,079.28 = 84,392.28 : x
  2. Step 2: Convert to fraction form
    252,911.52/379,079.28 = 84,392.28/x
  3. Step 3: Cross multiply
    252,911.52x = 379,079.28 × 84,392.28
  4. Step 4: Simplify right side
    252,911.52x = 31,991,364,739.96
  5. Step 5: Solve for x
    x = 31,991,364,739.96/252,911.52
  6. Step 6: Final answer
    x = 126,492.32

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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.