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Finding the Fourth Proportional to 436,625.20, 653,625.60 and 259,040.80

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Solution

The fourth proportional to 436,625.20, 653,625.60 and 259,040.80 is: 387,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,625.20 : 653,625.60 = 259,040.80 : x
  2. Step 2: Convert to fraction form
    436,625.20/653,625.60 = 259,040.80/x
  3. Step 3: Cross multiply
    436,625.20x = 653,625.60 × 259,040.80
  4. Step 4: Simplify right side
    436,625.20x = 169,315,698,324.48
  5. Step 5: Solve for x
    x = 169,315,698,324.48/436,625.20
  6. Step 6: Final answer
    x = 387,782.70

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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.