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Finding the Fourth Proportional to 263,600.80, 395,663.64 and 145,327.84

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Solution

The fourth proportional to 263,600.80, 395,663.64 and 145,327.84 is: 218,136.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,600.80 : 395,663.64 = 145,327.84 : x
  2. Step 2: Convert to fraction form
    263,600.80/395,663.64 = 145,327.84/x
  3. Step 3: Cross multiply
    263,600.80x = 395,663.64 × 145,327.84
  4. Step 4: Simplify right side
    263,600.80x = 57,500,942,167.74
  5. Step 5: Solve for x
    x = 57,500,942,167.74/263,600.80
  6. Step 6: Final answer
    x = 218,136.45

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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.