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Finding the Fourth Proportional to 247,255.36, 370,862.53 and 78,768.88

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Solution

The fourth proportional to 247,255.36, 370,862.53 and 78,768.88 is: 118,146.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,255.36 : 370,862.53 = 78,768.88 : x
  2. Step 2: Convert to fraction form
    247,255.36/370,862.53 = 78,768.88/x
  3. Step 3: Cross multiply
    247,255.36x = 370,862.53 × 78,768.88
  4. Step 4: Simplify right side
    247,255.36x = 29,212,424,997.99
  5. Step 5: Solve for x
    x = 29,212,424,997.99/247,255.36
  6. Step 6: Final answer
    x = 118,146.78

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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.