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Finding the Fourth Proportional to 263,567.20, 395,350.80 and 121,412.20

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Solution

The fourth proportional to 263,567.20, 395,350.80 and 121,412.20 is: 182,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,567.20 : 395,350.80 = 121,412.20 : x
  2. Step 2: Convert to fraction form
    263,567.20/395,350.80 = 121,412.20/x
  3. Step 3: Cross multiply
    263,567.20x = 395,350.80 × 121,412.20
  4. Step 4: Simplify right side
    263,567.20x = 48,000,410,399.76
  5. Step 5: Solve for x
    x = 48,000,410,399.76/263,567.20
  6. Step 6: Final answer
    x = 182,118.30

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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.