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Finding the Fourth Proportional to 253,443.52, 380,249.64 and 84,980.44

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Solution

The fourth proportional to 253,443.52, 380,249.64 and 84,980.44 is: 127,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,443.52 : 380,249.64 = 84,980.44 : x
  2. Step 2: Convert to fraction form
    253,443.52/380,249.64 = 84,980.44/x
  3. Step 3: Cross multiply
    253,443.52x = 380,249.64 × 84,980.44
  4. Step 4: Simplify right side
    253,443.52x = 32,313,781,717.04
  5. Step 5: Solve for x
    x = 32,313,781,717.04/253,443.52
  6. Step 6: Final answer
    x = 127,498.95

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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.