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Finding the Fourth Proportional to 330,027.69, 495,108.51 and 105,381.78

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Solution

The fourth proportional to 330,027.69, 495,108.51 and 105,381.78 is: 158,094.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,027.69 : 495,108.51 = 105,381.78 : x
  2. Step 2: Convert to fraction form
    330,027.69/495,108.51 = 105,381.78/x
  3. Step 3: Cross multiply
    330,027.69x = 495,108.51 × 105,381.78
  4. Step 4: Simplify right side
    330,027.69x = 52,175,416,076.95
  5. Step 5: Solve for x
    x = 52,175,416,076.95/330,027.69
  6. Step 6: Final answer
    x = 158,094.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.