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Finding the Fourth Proportional to 259,744.60, 389,616.90 and 256,245.40

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Solution

The fourth proportional to 259,744.60, 389,616.90 and 256,245.40 is: 384,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,744.60 : 389,616.90 = 256,245.40 : x
  2. Step 2: Convert to fraction form
    259,744.60/389,616.90 = 256,245.40/x
  3. Step 3: Cross multiply
    259,744.60x = 389,616.90 × 256,245.40
  4. Step 4: Simplify right side
    259,744.60x = 99,837,538,387.26
  5. Step 5: Solve for x
    x = 99,837,538,387.26/259,744.60
  6. Step 6: Final answer
    x = 384,368.10

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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.