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Finding the Fourth Proportional to 211,234.25, 316,851.38 and 70,992.88

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Solution

The fourth proportional to 211,234.25, 316,851.38 and 70,992.88 is: 106,489.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,234.25 : 316,851.38 = 70,992.88 : x
  2. Step 2: Convert to fraction form
    211,234.25/316,851.38 = 70,992.88/x
  3. Step 3: Cross multiply
    211,234.25x = 316,851.38 × 70,992.88
  4. Step 4: Simplify right side
    211,234.25x = 22,494,191,998.17
  5. Step 5: Solve for x
    x = 22,494,191,998.17/211,234.25
  6. Step 6: Final answer
    x = 106,489.32

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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.