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Finding the Fourth Proportional to 239,840.49, 359,698.05 and 71,315.43

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Solution

The fourth proportional to 239,840.49, 359,698.05 and 71,315.43 is: 106,954.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,840.49 : 359,698.05 = 71,315.43 : x
  2. Step 2: Convert to fraction form
    239,840.49/359,698.05 = 71,315.43/x
  3. Step 3: Cross multiply
    239,840.49x = 359,698.05 × 71,315.43
  4. Step 4: Simplify right side
    239,840.49x = 25,652,021,105.91
  5. Step 5: Solve for x
    x = 25,652,021,105.91/239,840.49
  6. Step 6: Final answer
    x = 106,954.51

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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.