Home / 339,878.24-509,519.28-129,376.16

Finding the Fourth Proportional to 339,878.24, 509,519.28 and 129,376.16

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Solution

The fourth proportional to 339,878.24, 509,519.28 and 129,376.16 is: 193,950.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,878.24 : 509,519.28 = 129,376.16 : x
  2. Step 2: Convert to fraction form
    339,878.24/509,519.28 = 129,376.16/x
  3. Step 3: Cross multiply
    339,878.24x = 509,519.28 × 129,376.16
  4. Step 4: Simplify right side
    339,878.24x = 65,919,647,892.36
  5. Step 5: Solve for x
    x = 65,919,647,892.36/339,878.24
  6. Step 6: Final answer
    x = 193,950.77

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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.