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Finding the Fourth Proportional to 339,986.48, 509,979 and 161,953.52

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Solution

The fourth proportional to 339,986.48, 509,979 and 161,953.52 is: 242,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,986.48 : 509,979 = 161,953.52 : x
  2. Step 2: Convert to fraction form
    339,986.48/509,979 = 161,953.52/x
  3. Step 3: Cross multiply
    339,986.48x = 509,979 × 161,953.52
  4. Step 4: Simplify right side
    339,986.48x = 82,592,894,176.08
  5. Step 5: Solve for x
    x = 82,592,894,176.08/339,986.48
  6. Step 6: Final answer
    x = 242,929.94

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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.