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Finding the Fourth Proportional to 500,115.72, 690,160.86 and 273,775.80

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Solution

The fourth proportional to 500,115.72, 690,160.86 and 273,775.80 is: 377,811.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,115.72 : 690,160.86 = 273,775.80 : x
  2. Step 2: Convert to fraction form
    500,115.72/690,160.86 = 273,775.80/x
  3. Step 3: Cross multiply
    500,115.72x = 690,160.86 × 273,775.80
  4. Step 4: Simplify right side
    500,115.72x = 188,949,341,575.19
  5. Step 5: Solve for x
    x = 188,949,341,575.19/500,115.72
  6. Step 6: Final answer
    x = 377,811.24

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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.