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Finding the Fourth Proportional to 247,255.10, 370,862.16 and 78,768.62

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Solution

The fourth proportional to 247,255.10, 370,862.16 and 78,768.62 is: 118,146.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,255.10 : 370,862.16 = 78,768.62 : x
  2. Step 2: Convert to fraction form
    247,255.10/370,862.16 = 78,768.62/x
  3. Step 3: Cross multiply
    247,255.10x = 370,862.16 × 78,768.62
  4. Step 4: Simplify right side
    247,255.10x = 29,212,300,553.42
  5. Step 5: Solve for x
    x = 29,212,300,553.42/247,255.10
  6. Step 6: Final answer
    x = 118,146.40

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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.