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Finding the Fourth Proportional to 330,078.76, 455,508.30 and 179,175.76

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Solution

The fourth proportional to 330,078.76, 455,508.30 and 179,175.76 is: 247,262.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,078.76 : 455,508.30 = 179,175.76 : x
  2. Step 2: Convert to fraction form
    330,078.76/455,508.30 = 179,175.76/x
  3. Step 3: Cross multiply
    330,078.76x = 455,508.30 × 179,175.76
  4. Step 4: Simplify right side
    330,078.76x = 81,616,045,838.81
  5. Step 5: Solve for x
    x = 81,616,045,838.81/330,078.76
  6. Step 6: Final answer
    x = 247,262.34

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1.5x scale

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.