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Finding the Fourth Proportional to 611,170.84, 916,919.29 and 211,811.27

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Solution

The fourth proportional to 611,170.84, 916,919.29 and 211,811.27 is: 317,773.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,170.84 : 916,919.29 = 211,811.27 : x
  2. Step 2: Convert to fraction form
    611,170.84/916,919.29 = 211,811.27/x
  3. Step 3: Cross multiply
    611,170.84x = 916,919.29 × 211,811.27
  4. Step 4: Simplify right side
    611,170.84x = 194,213,840,140.24
  5. Step 5: Solve for x
    x = 194,213,840,140.24/611,170.84
  6. Step 6: Final answer
    x = 317,773.41

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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.