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Finding the Fourth Proportional to 339,699.20, 509,548.80 and 245,220.80

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Solution

The fourth proportional to 339,699.20, 509,548.80 and 245,220.80 is: 367,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,699.20 : 509,548.80 = 245,220.80 : x
  2. Step 2: Convert to fraction form
    339,699.20/509,548.80 = 245,220.80/x
  3. Step 3: Cross multiply
    339,699.20x = 509,548.80 × 245,220.80
  4. Step 4: Simplify right side
    339,699.20x = 124,951,964,375.04
  5. Step 5: Solve for x
    x = 124,951,964,375.04/339,699.20
  6. Step 6: Final answer
    x = 367,831.20

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1.5x scale

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.