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Finding the Fourth Proportional to 436,885.20, 654,015.60 and 259,300.80

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Solution

The fourth proportional to 436,885.20, 654,015.60 and 259,300.80 is: 388,172.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,885.20 : 654,015.60 = 259,300.80 : x
  2. Step 2: Convert to fraction form
    436,885.20/654,015.60 = 259,300.80/x
  3. Step 3: Cross multiply
    436,885.20x = 654,015.60 × 259,300.80
  4. Step 4: Simplify right side
    436,885.20x = 169,586,768,292.48
  5. Step 5: Solve for x
    x = 169,586,768,292.48/436,885.20
  6. Step 6: Final answer
    x = 388,172.38

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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.