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Finding the Fourth Proportional to 330,414.62, 455,994.71 and 187,175.84

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Solution

The fourth proportional to 330,414.62, 455,994.71 and 187,175.84 is: 258,315.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,414.62 : 455,994.71 = 187,175.84 : x
  2. Step 2: Convert to fraction form
    330,414.62/455,994.71 = 187,175.84/x
  3. Step 3: Cross multiply
    330,414.62x = 455,994.71 × 187,175.84
  4. Step 4: Simplify right side
    330,414.62x = 85,351,189,663.95
  5. Step 5: Solve for x
    x = 85,351,189,663.95/330,414.62
  6. Step 6: Final answer
    x = 258,315.42

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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.