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Finding the Fourth Proportional to 330,370.63, 455,872.78 and 194,374.66

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Solution

The fourth proportional to 330,370.63, 455,872.78 and 194,374.66 is: 268,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,370.63 : 455,872.78 = 194,374.66 : x
  2. Step 2: Convert to fraction form
    330,370.63/455,872.78 = 194,374.66/x
  3. Step 3: Cross multiply
    330,370.63x = 455,872.78 × 194,374.66
  4. Step 4: Simplify right side
    330,370.63x = 88,610,116,615.75
  5. Step 5: Solve for x
    x = 88,610,116,615.75/330,370.63
  6. Step 6: Final answer
    x = 268,214.27

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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.