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Finding the Fourth Proportional to 253,616.97, 380,483.79 and 76,127.34

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Solution

The fourth proportional to 253,616.97, 380,483.79 and 76,127.34 is: 114,208.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,616.97 : 380,483.79 = 76,127.34 : x
  2. Step 2: Convert to fraction form
    253,616.97/380,483.79 = 76,127.34/x
  3. Step 3: Cross multiply
    253,616.97x = 380,483.79 × 76,127.34
  4. Step 4: Simplify right side
    253,616.97x = 28,965,218,845.82
  5. Step 5: Solve for x
    x = 28,965,218,845.82/253,616.97
  6. Step 6: Final answer
    x = 114,208.52

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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.