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Finding the Fourth Proportional to 339,507.54, 511,292.40 and 309,240.82

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Solution

The fourth proportional to 339,507.54, 511,292.40 and 309,240.82 is: 465,711.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,507.54 : 511,292.40 = 309,240.82 : x
  2. Step 2: Convert to fraction form
    339,507.54/511,292.40 = 309,240.82/x
  3. Step 3: Cross multiply
    339,507.54x = 511,292.40 × 309,240.82
  4. Step 4: Simplify right side
    339,507.54x = 158,112,481,035.77
  5. Step 5: Solve for x
    x = 158,112,481,035.77/339,507.54
  6. Step 6: Final answer
    x = 465,711.25

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1.5x scale

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.