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Finding the Fourth Proportional to 330,499.44, 495,781.97 and 105,803.42

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Solution

The fourth proportional to 330,499.44, 495,781.97 and 105,803.42 is: 158,715.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,499.44 : 495,781.97 = 105,803.42 : x
  2. Step 2: Convert to fraction form
    330,499.44/495,781.97 = 105,803.42/x
  3. Step 3: Cross multiply
    330,499.44x = 495,781.97 × 105,803.42
  4. Step 4: Simplify right side
    330,499.44x = 52,455,424,992.41
  5. Step 5: Solve for x
    x = 52,455,424,992.41/330,499.44
  6. Step 6: Final answer
    x = 158,715.62

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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.