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Finding the Fourth Proportional to 259,729.40, 389,885.70 and 200,826.20

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Solution

The fourth proportional to 259,729.40, 389,885.70 and 200,826.20 is: 301,464.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,729.40 : 389,885.70 = 200,826.20 : x
  2. Step 2: Convert to fraction form
    259,729.40/389,885.70 = 200,826.20/x
  3. Step 3: Cross multiply
    259,729.40x = 389,885.70 × 200,826.20
  4. Step 4: Simplify right side
    259,729.40x = 78,299,263,565.34
  5. Step 5: Solve for x
    x = 78,299,263,565.34/259,729.40
  6. Step 6: Final answer
    x = 301,464.77

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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.