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Finding the Fourth Proportional to 253,439.52, 380,243.64 and 84,976.44

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Solution

The fourth proportional to 253,439.52, 380,243.64 and 84,976.44 is: 127,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,439.52 : 380,243.64 = 84,976.44 : x
  2. Step 2: Convert to fraction form
    253,439.52/380,243.64 = 84,976.44/x
  3. Step 3: Cross multiply
    253,439.52x = 380,243.64 × 84,976.44
  4. Step 4: Simplify right side
    253,439.52x = 32,311,750,859.84
  5. Step 5: Solve for x
    x = 32,311,750,859.84/253,439.52
  6. Step 6: Final answer
    x = 127,492.95

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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.