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Finding the Fourth Proportional to 339,872.80, 509,809.20 and 296,570.20

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Solution

The fourth proportional to 339,872.80, 509,809.20 and 296,570.20 is: 444,855.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,872.80 : 509,809.20 = 296,570.20 : x
  2. Step 2: Convert to fraction form
    339,872.80/509,809.20 = 296,570.20/x
  3. Step 3: Cross multiply
    339,872.80x = 509,809.20 × 296,570.20
  4. Step 4: Simplify right side
    339,872.80x = 151,194,216,405.84
  5. Step 5: Solve for x
    x = 151,194,216,405.84/339,872.80
  6. Step 6: Final answer
    x = 444,855.30

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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.