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Finding the Fourth Proportional to 339,889.67, 509,730.30 and 112,143.25

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Solution

The fourth proportional to 339,889.67, 509,730.30 and 112,143.25 is: 168,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,889.67 : 509,730.30 = 112,143.25 : x
  2. Step 2: Convert to fraction form
    339,889.67/509,730.30 = 112,143.25/x
  3. Step 3: Cross multiply
    339,889.67x = 509,730.30 × 112,143.25
  4. Step 4: Simplify right side
    339,889.67x = 57,162,813,102.64
  5. Step 5: Solve for x
    x = 57,162,813,102.64/339,889.67
  6. Step 6: Final answer
    x = 168,180.50

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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.