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Finding the Fourth Proportional to 345,721.50, 477,095.67 and 186,745.50

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Solution

The fourth proportional to 345,721.50, 477,095.67 and 186,745.50 is: 257,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,721.50 : 477,095.67 = 186,745.50 : x
  2. Step 2: Convert to fraction form
    345,721.50/477,095.67 = 186,745.50/x
  3. Step 3: Cross multiply
    345,721.50x = 477,095.67 × 186,745.50
  4. Step 4: Simplify right side
    345,721.50x = 89,095,469,441.99
  5. Step 5: Solve for x
    x = 89,095,469,441.99/345,721.50
  6. Step 6: Final answer
    x = 257,708.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.