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Finding the Fourth Proportional to 439,775.20, 659,662.80 and 253,151.20

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Solution

The fourth proportional to 439,775.20, 659,662.80 and 253,151.20 is: 379,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,775.20 : 659,662.80 = 253,151.20 : x
  2. Step 2: Convert to fraction form
    439,775.20/659,662.80 = 253,151.20/x
  3. Step 3: Cross multiply
    439,775.20x = 659,662.80 × 253,151.20
  4. Step 4: Simplify right side
    439,775.20x = 166,994,429,415.36
  5. Step 5: Solve for x
    x = 166,994,429,415.36/439,775.20
  6. Step 6: Final answer
    x = 379,726.80

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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.