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Finding the Fourth Proportional to 479,475.75, 661,685.66 and 264,611.21

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Solution

The fourth proportional to 479,475.75, 661,685.66 and 264,611.21 is: 365,168.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,475.75 : 661,685.66 = 264,611.21 : x
  2. Step 2: Convert to fraction form
    479,475.75/661,685.66 = 264,611.21/x
  3. Step 3: Cross multiply
    479,475.75x = 661,685.66 × 264,611.21
  4. Step 4: Simplify right side
    479,475.75x = 175,089,439,493.06
  5. Step 5: Solve for x
    x = 175,089,439,493.06/479,475.75
  6. Step 6: Final answer
    x = 365,168.50

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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.