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Finding the Fourth Proportional to 479,474.50, 661,655.47 and 264,611.78

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Solution

The fourth proportional to 479,474.50, 661,655.47 and 264,611.78 is: 365,153.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,474.50 : 661,655.47 = 264,611.78 : x
  2. Step 2: Convert to fraction form
    479,474.50/661,655.47 = 264,611.78/x
  3. Step 3: Cross multiply
    479,474.50x = 661,655.47 × 264,611.78
  4. Step 4: Simplify right side
    479,474.50x = 175,081,831,663.44
  5. Step 5: Solve for x
    x = 175,081,831,663.44/479,474.50
  6. Step 6: Final answer
    x = 365,153.58

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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.