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Finding the Fourth Proportional to 259,732.40, 389,598.60 and 165,729.20

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Solution

The fourth proportional to 259,732.40, 389,598.60 and 165,729.20 is: 248,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,732.40 : 389,598.60 = 165,729.20 : x
  2. Step 2: Convert to fraction form
    259,732.40/389,598.60 = 165,729.20/x
  3. Step 3: Cross multiply
    259,732.40x = 389,598.60 × 165,729.20
  4. Step 4: Simplify right side
    259,732.40x = 64,567,864,299.12
  5. Step 5: Solve for x
    x = 64,567,864,299.12/259,732.40
  6. Step 6: Final answer
    x = 248,593.80

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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.