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Finding the Fourth Proportional to 211,165.90, 316,715.84 and 69,010.04

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Solution

The fourth proportional to 211,165.90, 316,715.84 and 69,010.04 is: 103,504.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,165.90 : 316,715.84 = 69,010.04 : x
  2. Step 2: Convert to fraction form
    211,165.90/316,715.84 = 69,010.04/x
  3. Step 3: Cross multiply
    211,165.90x = 316,715.84 × 69,010.04
  4. Step 4: Simplify right side
    211,165.90x = 21,856,572,441.98
  5. Step 5: Solve for x
    x = 21,856,572,441.98/211,165.90
  6. Step 6: Final answer
    x = 103,504.27

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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.