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Finding the Fourth Proportional to 554,375.90, 831,556.55 and 133,648.40

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Solution

The fourth proportional to 554,375.90, 831,556.55 and 133,648.40 is: 200,470.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,375.90 : 831,556.55 = 133,648.40 : x
  2. Step 2: Convert to fraction form
    554,375.90/831,556.55 = 133,648.40/x
  3. Step 3: Cross multiply
    554,375.90x = 831,556.55 × 133,648.40
  4. Step 4: Simplify right side
    554,375.90x = 111,136,198,593.36
  5. Step 5: Solve for x
    x = 111,136,198,593.36/554,375.90
  6. Step 6: Final answer
    x = 200,470.84

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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.