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Finding the Fourth Proportional to 479,768.80, 719,611.40 and 195,489.30

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Solution

The fourth proportional to 479,768.80, 719,611.40 and 195,489.30 is: 293,216.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,768.80 : 719,611.40 = 195,489.30 : x
  2. Step 2: Convert to fraction form
    479,768.80/719,611.40 = 195,489.30/x
  3. Step 3: Cross multiply
    479,768.80x = 719,611.40 × 195,489.30
  4. Step 4: Simplify right side
    479,768.80x = 140,676,328,858.02
  5. Step 5: Solve for x
    x = 140,676,328,858.02/479,768.80
  6. Step 6: Final answer
    x = 293,216.92

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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.