Home / 211,441.56-316,958.94-78,285.64

Finding the Fourth Proportional to 211,441.56, 316,958.94 and 78,285.64

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Solution

The fourth proportional to 211,441.56, 316,958.94 and 78,285.64 is: 117,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,441.56 : 316,958.94 = 78,285.64 : x
  2. Step 2: Convert to fraction form
    211,441.56/316,958.94 = 78,285.64/x
  3. Step 3: Cross multiply
    211,441.56x = 316,958.94 × 78,285.64
  4. Step 4: Simplify right side
    211,441.56x = 24,813,333,471.62
  5. Step 5: Solve for x
    x = 24,813,333,471.62/211,441.56
  6. Step 6: Final answer
    x = 117,353.15

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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.