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Finding the Fourth Proportional to 330,216, 455,703.75 and 179,313

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Solution

The fourth proportional to 330,216, 455,703.75 and 179,313 is: 247,455.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,216 : 455,703.75 = 179,313 : x
  2. Step 2: Convert to fraction form
    330,216/455,703.75 = 179,313/x
  3. Step 3: Cross multiply
    330,216x = 455,703.75 × 179,313
  4. Step 4: Simplify right side
    330,216x = 81,713,606,523.75
  5. Step 5: Solve for x
    x = 81,713,606,523.75/330,216
  6. Step 6: Final answer
    x = 247,455.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.