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Finding the Fourth Proportional to 251,631, 377,446.50 and 64,642.50

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Solution

The fourth proportional to 251,631, 377,446.50 and 64,642.50 is: 96,963.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,631 : 377,446.50 = 64,642.50 : x
  2. Step 2: Convert to fraction form
    251,631/377,446.50 = 64,642.50/x
  3. Step 3: Cross multiply
    251,631x = 377,446.50 × 64,642.50
  4. Step 4: Simplify right side
    251,631x = 24,399,085,376.25
  5. Step 5: Solve for x
    x = 24,399,085,376.25/251,631
  6. Step 6: Final answer
    x = 96,963.75

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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.