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Finding the Fourth Proportional to 511,852.20, 768,008.70 and 245,509.80

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Solution

The fourth proportional to 511,852.20, 768,008.70 and 245,509.80 is: 368,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,852.20 : 768,008.70 = 245,509.80 : x
  2. Step 2: Convert to fraction form
    511,852.20/768,008.70 = 245,509.80/x
  3. Step 3: Cross multiply
    511,852.20x = 768,008.70 × 245,509.80
  4. Step 4: Simplify right side
    511,852.20x = 188,553,662,335.26
  5. Step 5: Solve for x
    x = 188,553,662,335.26/511,852.20
  6. Step 6: Final answer
    x = 368,375.21

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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.