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Finding the Fourth Proportional to 382,309.80, 573,464.70 and 256,338.60

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Solution

The fourth proportional to 382,309.80, 573,464.70 and 256,338.60 is: 384,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,309.80 : 573,464.70 = 256,338.60 : x
  2. Step 2: Convert to fraction form
    382,309.80/573,464.70 = 256,338.60/x
  3. Step 3: Cross multiply
    382,309.80x = 573,464.70 × 256,338.60
  4. Step 4: Simplify right side
    382,309.80x = 147,001,138,347.42
  5. Step 5: Solve for x
    x = 147,001,138,347.42/382,309.80
  6. Step 6: Final answer
    x = 384,507.90

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Similar ratio
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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.