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Finding the Fourth Proportional to 211,167.15, 316,750.65 and 53,395.57

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Solution

The fourth proportional to 211,167.15, 316,750.65 and 53,395.57 is: 80,093.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,167.15 : 316,750.65 = 53,395.57 : x
  2. Step 2: Convert to fraction form
    211,167.15/316,750.65 = 53,395.57/x
  3. Step 3: Cross multiply
    211,167.15x = 316,750.65 × 53,395.57
  4. Step 4: Simplify right side
    211,167.15x = 16,913,081,504.62
  5. Step 5: Solve for x
    x = 16,913,081,504.62/211,167.15
  6. Step 6: Final answer
    x = 80,093.34

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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.