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Finding the Fourth Proportional to 543,960.15, 815,915.31 and 189,001.95

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Solution

The fourth proportional to 543,960.15, 815,915.31 and 189,001.95 is: 283,494.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,960.15 : 815,915.31 = 189,001.95 : x
  2. Step 2: Convert to fraction form
    543,960.15/815,915.31 = 189,001.95/x
  3. Step 3: Cross multiply
    543,960.15x = 815,915.31 × 189,001.95
  4. Step 4: Simplify right side
    543,960.15x = 154,209,584,624.86
  5. Step 5: Solve for x
    x = 154,209,584,624.86/543,960.15
  6. Step 6: Final answer
    x = 283,494.27

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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.