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Finding the Fourth Proportional to 510,517.70, 765,780.92 and 145,778.36

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Solution

The fourth proportional to 510,517.70, 765,780.92 and 145,778.36 is: 218,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,517.70 : 765,780.92 = 145,778.36 : x
  2. Step 2: Convert to fraction form
    510,517.70/765,780.92 = 145,778.36/x
  3. Step 3: Cross multiply
    510,517.70x = 765,780.92 × 145,778.36
  4. Step 4: Simplify right side
    510,517.70x = 111,634,285,189.52
  5. Step 5: Solve for x
    x = 111,634,285,189.52/510,517.70
  6. Step 6: Final answer
    x = 218,668.79

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1.5x scale

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.