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Finding the Fourth Proportional to 340,960.80, 511,756.32 and 172,599.28

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Solution

The fourth proportional to 340,960.80, 511,756.32 and 172,599.28 is: 259,058.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,960.80 : 511,756.32 = 172,599.28 : x
  2. Step 2: Convert to fraction form
    340,960.80/511,756.32 = 172,599.28/x
  3. Step 3: Cross multiply
    340,960.80x = 511,756.32 × 172,599.28
  4. Step 4: Simplify right side
    340,960.80x = 88,328,772,367.45
  5. Step 5: Solve for x
    x = 88,328,772,367.45/340,960.80
  6. Step 6: Final answer
    x = 259,058.44

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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.