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Finding the Fourth Proportional to 263,592.80, 395,651.64 and 145,319.84

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Solution

The fourth proportional to 263,592.80, 395,651.64 and 145,319.84 is: 218,124.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,592.80 : 395,651.64 = 145,319.84 : x
  2. Step 2: Convert to fraction form
    263,592.80/395,651.64 = 145,319.84/x
  3. Step 3: Cross multiply
    263,592.80x = 395,651.64 × 145,319.84
  4. Step 4: Simplify right side
    263,592.80x = 57,496,033,020.54
  5. Step 5: Solve for x
    x = 57,496,033,020.54/263,592.80
  6. Step 6: Final answer
    x = 218,124.44

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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.