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Finding the Fourth Proportional to 511,846.20, 767,999.70 and 245,503.80

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Solution

The fourth proportional to 511,846.20, 767,999.70 and 245,503.80 is: 368,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,846.20 : 767,999.70 = 245,503.80 : x
  2. Step 2: Convert to fraction form
    511,846.20/767,999.70 = 245,503.80/x
  3. Step 3: Cross multiply
    511,846.20x = 767,999.70 × 245,503.80
  4. Step 4: Simplify right side
    511,846.20x = 188,546,844,748.86
  5. Step 5: Solve for x
    x = 188,546,844,748.86/511,846.20
  6. Step 6: Final answer
    x = 368,366.21

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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.