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Finding the Fourth Proportional to 339,952.20, 509,928.30 and 162,805.20

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Solution

The fourth proportional to 339,952.20, 509,928.30 and 162,805.20 is: 244,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,952.20 : 509,928.30 = 162,805.20 : x
  2. Step 2: Convert to fraction form
    339,952.20/509,928.30 = 162,805.20/x
  3. Step 3: Cross multiply
    339,952.20x = 509,928.30 × 162,805.20
  4. Step 4: Simplify right side
    339,952.20x = 83,018,978,867.16
  5. Step 5: Solve for x
    x = 83,018,978,867.16/339,952.20
  6. Step 6: Final answer
    x = 244,207.80

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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.