Home / 211,318.57-316,997.52-76,416.45

Finding the Fourth Proportional to 211,318.57, 316,997.52 and 76,416.45

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Solution

The fourth proportional to 211,318.57, 316,997.52 and 76,416.45 is: 114,631.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,318.57 : 316,997.52 = 76,416.45 : x
  2. Step 2: Convert to fraction form
    211,318.57/316,997.52 = 76,416.45/x
  3. Step 3: Cross multiply
    211,318.57x = 316,997.52 × 76,416.45
  4. Step 4: Simplify right side
    211,318.57x = 24,223,825,137.20
  5. Step 5: Solve for x
    x = 24,223,825,137.20/211,318.57
  6. Step 6: Final answer
    x = 114,631.79

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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.