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Finding the Fourth Proportional to 363,136.32, 501,135.12 and 212,320.80

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Solution

The fourth proportional to 363,136.32, 501,135.12 and 212,320.80 is: 293,006.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,136.32 : 501,135.12 = 212,320.80 : x
  2. Step 2: Convert to fraction form
    363,136.32/501,135.12 = 212,320.80/x
  3. Step 3: Cross multiply
    363,136.32x = 501,135.12 × 212,320.80
  4. Step 4: Simplify right side
    363,136.32x = 106,401,409,586.50
  5. Step 5: Solve for x
    x = 106,401,409,586.50/363,136.32
  6. Step 6: Final answer
    x = 293,006.80

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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.