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Finding the Fourth Proportional to 339,653.88, 509,449.50 and 114,988.68

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Solution

The fourth proportional to 339,653.88, 509,449.50 and 114,988.68 is: 172,472.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,653.88 : 509,449.50 = 114,988.68 : x
  2. Step 2: Convert to fraction form
    339,653.88/509,449.50 = 114,988.68/x
  3. Step 3: Cross multiply
    339,653.88x = 509,449.50 × 114,988.68
  4. Step 4: Simplify right side
    339,653.88x = 58,580,925,531.66
  5. Step 5: Solve for x
    x = 58,580,925,531.66/339,653.88
  6. Step 6: Final answer
    x = 172,472.42

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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.