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Finding the Fourth Proportional to 339,915.45, 509,870.08 and 161,882.72

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Solution

The fourth proportional to 339,915.45, 509,870.08 and 161,882.72 is: 242,822.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,915.45 : 509,870.08 = 161,882.72 : x
  2. Step 2: Convert to fraction form
    339,915.45/509,870.08 = 161,882.72/x
  3. Step 3: Cross multiply
    339,915.45x = 509,870.08 × 161,882.72
  4. Step 4: Simplify right side
    339,915.45x = 82,539,155,397.02
  5. Step 5: Solve for x
    x = 82,539,155,397.02/339,915.45
  6. Step 6: Final answer
    x = 242,822.61

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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.