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Finding the Fourth Proportional to 315,085.20, 472,627.80 and 104,755.60

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Solution

The fourth proportional to 315,085.20, 472,627.80 and 104,755.60 is: 157,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,085.20 : 472,627.80 = 104,755.60 : x
  2. Step 2: Convert to fraction form
    315,085.20/472,627.80 = 104,755.60/x
  3. Step 3: Cross multiply
    315,085.20x = 472,627.80 × 104,755.60
  4. Step 4: Simplify right side
    315,085.20x = 49,510,408,765.68
  5. Step 5: Solve for x
    x = 49,510,408,765.68/315,085.20
  6. Step 6: Final answer
    x = 157,133.40

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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.