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Finding the Fourth Proportional to 286,514.60, 429,620.70 and 96,909.80

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Solution

The fourth proportional to 286,514.60, 429,620.70 and 96,909.80 is: 145,313.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,514.60 : 429,620.70 = 96,909.80 : x
  2. Step 2: Convert to fraction form
    286,514.60/429,620.70 = 96,909.80/x
  3. Step 3: Cross multiply
    286,514.60x = 429,620.70 × 96,909.80
  4. Step 4: Simplify right side
    286,514.60x = 41,634,456,112.86
  5. Step 5: Solve for x
    x = 41,634,456,112.86/286,514.60
  6. Step 6: Final answer
    x = 145,313.56

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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.