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Finding the Fourth Proportional to 259,542.80, 389,314.20 and 243,796.40

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Solution

The fourth proportional to 259,542.80, 389,314.20 and 243,796.40 is: 365,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,542.80 : 389,314.20 = 243,796.40 : x
  2. Step 2: Convert to fraction form
    259,542.80/389,314.20 = 243,796.40/x
  3. Step 3: Cross multiply
    259,542.80x = 389,314.20 × 243,796.40
  4. Step 4: Simplify right side
    259,542.80x = 94,913,400,428.88
  5. Step 5: Solve for x
    x = 94,913,400,428.88/259,542.80
  6. Step 6: Final answer
    x = 365,694.60

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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.