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Finding the Fourth Proportional to 343,378.60, 515,286.60 and 201,223.60

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Solution

The fourth proportional to 343,378.60, 515,286.60 and 201,223.60 is: 301,963.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,378.60 : 515,286.60 = 201,223.60 : x
  2. Step 2: Convert to fraction form
    343,378.60/515,286.60 = 201,223.60/x
  3. Step 3: Cross multiply
    343,378.60x = 515,286.60 × 201,223.60
  4. Step 4: Simplify right side
    343,378.60x = 103,687,824,683.76
  5. Step 5: Solve for x
    x = 103,687,824,683.76/343,378.60
  6. Step 6: Final answer
    x = 301,963.56

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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.