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Finding the Fourth Proportional to 491,412.60, 737,143.20 and 255,216.60

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Solution

The fourth proportional to 491,412.60, 737,143.20 and 255,216.60 is: 382,837.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,412.60 : 737,143.20 = 255,216.60 : x
  2. Step 2: Convert to fraction form
    491,412.60/737,143.20 = 255,216.60/x
  3. Step 3: Cross multiply
    491,412.60x = 737,143.20 × 255,216.60
  4. Step 4: Simplify right side
    491,412.60x = 188,131,181,217.12
  5. Step 5: Solve for x
    x = 188,131,181,217.12/491,412.60
  6. Step 6: Final answer
    x = 382,837.52

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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.