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Finding the Fourth Proportional to 500,562.21, 690,774.18 and 271,118.92

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Solution

The fourth proportional to 500,562.21, 690,774.18 and 271,118.92 is: 374,143.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,562.21 : 690,774.18 = 271,118.92 : x
  2. Step 2: Convert to fraction form
    500,562.21/690,774.18 = 271,118.92/x
  3. Step 3: Cross multiply
    500,562.21x = 690,774.18 × 271,118.92
  4. Step 4: Simplify right side
    500,562.21x = 187,281,950,139.86
  5. Step 5: Solve for x
    x = 187,281,950,139.86/500,562.21
  6. Step 6: Final answer
    x = 374,143.21

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1.5x scale

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.