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Finding the Fourth Proportional to 330,878.82, 456,693.90 and 187,722.66

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Solution

The fourth proportional to 330,878.82, 456,693.90 and 187,722.66 is: 259,103.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,878.82 : 456,693.90 = 187,722.66 : x
  2. Step 2: Convert to fraction form
    330,878.82/456,693.90 = 187,722.66/x
  3. Step 3: Cross multiply
    330,878.82x = 456,693.90 × 187,722.66
  4. Step 4: Simplify right side
    330,878.82x = 85,731,793,713.77
  5. Step 5: Solve for x
    x = 85,731,793,713.77/330,878.82
  6. Step 6: Final answer
    x = 259,103.30

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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.