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Finding the Fourth Proportional to 339,508.04, 511,293.15 and 309,241.32

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Solution

The fourth proportional to 339,508.04, 511,293.15 and 309,241.32 is: 465,712.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,508.04 : 511,293.15 = 309,241.32 : x
  2. Step 2: Convert to fraction form
    339,508.04/511,293.15 = 309,241.32/x
  3. Step 3: Cross multiply
    339,508.04x = 511,293.15 × 309,241.32
  4. Step 4: Simplify right side
    339,508.04x = 158,112,968,612.96
  5. Step 5: Solve for x
    x = 158,112,968,612.96/339,508.04
  6. Step 6: Final answer
    x = 465,712.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.