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Finding the Fourth Proportional to 236,470.80, 354,738.60 and 78,682.80

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Solution

The fourth proportional to 236,470.80, 354,738.60 and 78,682.80 is: 118,034.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,470.80 : 354,738.60 = 78,682.80 : x
  2. Step 2: Convert to fraction form
    236,470.80/354,738.60 = 78,682.80/x
  3. Step 3: Cross multiply
    236,470.80x = 354,738.60 × 78,682.80
  4. Step 4: Simplify right side
    236,470.80x = 27,911,826,316.08
  5. Step 5: Solve for x
    x = 27,911,826,316.08/236,470.80
  6. Step 6: Final answer
    x = 118,034.98

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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.