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Finding the Fourth Proportional to 511,825.20, 767,737.80 and 245,540.40

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Solution

The fourth proportional to 511,825.20, 767,737.80 and 245,540.40 is: 368,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,825.20 : 767,737.80 = 245,540.40 : x
  2. Step 2: Convert to fraction form
    511,825.20/767,737.80 = 245,540.40/x
  3. Step 3: Cross multiply
    511,825.20x = 767,737.80 × 245,540.40
  4. Step 4: Simplify right side
    511,825.20x = 188,510,646,507.12
  5. Step 5: Solve for x
    x = 188,510,646,507.12/511,825.20
  6. Step 6: Final answer
    x = 368,310.60

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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.