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Finding the Fourth Proportional to 500,173.21, 690,239.01 and 273,818.71

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Solution

The fourth proportional to 500,173.21, 690,239.01 and 273,818.71 is: 377,869.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,173.21 : 690,239.01 = 273,818.71 : x
  2. Step 2: Convert to fraction form
    500,173.21/690,239.01 = 273,818.71/x
  3. Step 3: Cross multiply
    500,173.21x = 690,239.01 × 273,818.71
  4. Step 4: Simplify right side
    500,173.21x = 189,000,355,309.88
  5. Step 5: Solve for x
    x = 189,000,355,309.88/500,173.21
  6. Step 6: Final answer
    x = 377,869.81

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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.