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Finding the Fourth Proportional to 500,808.71, 691,108.93 and 271,360.64

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Solution

The fourth proportional to 500,808.71, 691,108.93 and 271,360.64 is: 374,473.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,808.71 : 691,108.93 = 271,360.64 : x
  2. Step 2: Convert to fraction form
    500,808.71/691,108.93 = 271,360.64/x
  3. Step 3: Cross multiply
    500,808.71x = 691,108.93 × 271,360.64
  4. Step 4: Simplify right side
    500,808.71x = 187,539,757,420.57
  5. Step 5: Solve for x
    x = 187,539,757,420.57/500,808.71
  6. Step 6: Final answer
    x = 374,473.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.