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Finding the Fourth Proportional to 286,085.52, 394,771.86 and 169,778.88

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Solution

The fourth proportional to 286,085.52, 394,771.86 and 169,778.88 is: 234,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,085.52 : 394,771.86 = 169,778.88 : x
  2. Step 2: Convert to fraction form
    286,085.52/394,771.86 = 169,778.88/x
  3. Step 3: Cross multiply
    286,085.52x = 394,771.86 × 169,778.88
  4. Step 4: Simplify right side
    286,085.52x = 67,023,924,246.32
  5. Step 5: Solve for x
    x = 67,023,924,246.32/286,085.52
  6. Step 6: Final answer
    x = 234,279.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.