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Finding the Fourth Proportional to 339,303.48, 509,013.94 and 114,665.72

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Solution

The fourth proportional to 339,303.48, 509,013.94 and 114,665.72 is: 172,018.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,303.48 : 509,013.94 = 114,665.72 : x
  2. Step 2: Convert to fraction form
    339,303.48/509,013.94 = 114,665.72/x
  3. Step 3: Cross multiply
    339,303.48x = 509,013.94 × 114,665.72
  4. Step 4: Simplify right side
    339,303.48x = 58,366,449,920.14
  5. Step 5: Solve for x
    x = 58,366,449,920.14/339,303.48
  6. Step 6: Final answer
    x = 172,018.42

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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.