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Finding the Fourth Proportional to 339,881.87, 509,713.66 and 112,126.29

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Solution

The fourth proportional to 339,881.87, 509,713.66 and 112,126.29 is: 168,153.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,881.87 : 509,713.66 = 112,126.29 : x
  2. Step 2: Convert to fraction form
    339,881.87/509,713.66 = 112,126.29/x
  3. Step 3: Cross multiply
    339,881.87x = 509,713.66 × 112,126.29
  4. Step 4: Simplify right side
    339,881.87x = 57,152,301,658.12
  5. Step 5: Solve for x
    x = 57,152,301,658.12/339,881.87
  6. Step 6: Final answer
    x = 168,153.43

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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.