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Finding the Fourth Proportional to 206,532.45, 309,780.45 and 56,759.40

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Solution

The fourth proportional to 206,532.45, 309,780.45 and 56,759.40 is: 85,134.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,532.45 : 309,780.45 = 56,759.40 : x
  2. Step 2: Convert to fraction form
    206,532.45/309,780.45 = 56,759.40/x
  3. Step 3: Cross multiply
    206,532.45x = 309,780.45 × 56,759.40
  4. Step 4: Simplify right side
    206,532.45x = 17,582,952,473.73
  5. Step 5: Solve for x
    x = 17,582,952,473.73/206,532.45
  6. Step 6: Final answer
    x = 85,134.09

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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.