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Finding the Fourth Proportional to 319,690.66, 479,524.64 and 79,805.92

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Solution

The fourth proportional to 319,690.66, 479,524.64 and 79,805.92 is: 119,706.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,690.66 : 479,524.64 = 79,805.92 : x
  2. Step 2: Convert to fraction form
    319,690.66/479,524.64 = 79,805.92/x
  3. Step 3: Cross multiply
    319,690.66x = 479,524.64 × 79,805.92
  4. Step 4: Simplify right side
    319,690.66x = 38,268,905,057.87
  5. Step 5: Solve for x
    x = 38,268,905,057.87/319,690.66
  6. Step 6: Final answer
    x = 119,706.05

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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.