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Finding the Fourth Proportional to 374,142.33, 515,266.79 and 350,128.53

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Solution

The fourth proportional to 374,142.33, 515,266.79 and 350,128.53 is: 482,195.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,142.33 : 515,266.79 = 350,128.53 : x
  2. Step 2: Convert to fraction form
    374,142.33/515,266.79 = 350,128.53/x
  3. Step 3: Cross multiply
    374,142.33x = 515,266.79 × 350,128.53
  4. Step 4: Simplify right side
    374,142.33x = 180,409,601,989.88
  5. Step 5: Solve for x
    x = 180,409,601,989.88/374,142.33
  6. Step 6: Final answer
    x = 482,195.11

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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.