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Finding the Fourth Proportional to 340,966.80, 511,765.32 and 172,605.28

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Solution

The fourth proportional to 340,966.80, 511,765.32 and 172,605.28 is: 259,067.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,966.80 : 511,765.32 = 172,605.28 : x
  2. Step 2: Convert to fraction form
    340,966.80/511,765.32 = 172,605.28/x
  3. Step 3: Cross multiply
    340,966.80x = 511,765.32 × 172,605.28
  4. Step 4: Simplify right side
    340,966.80x = 88,333,396,352.89
  5. Step 5: Solve for x
    x = 88,333,396,352.89/340,966.80
  6. Step 6: Final answer
    x = 259,067.44

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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.