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Finding the Fourth Proportional to 500,107.74, 690,149.57 and 270,665.31

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Solution

The fourth proportional to 500,107.74, 690,149.57 and 270,665.31 is: 373,518.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,107.74 : 690,149.57 = 270,665.31 : x
  2. Step 2: Convert to fraction form
    500,107.74/690,149.57 = 270,665.31/x
  3. Step 3: Cross multiply
    500,107.74x = 690,149.57 × 270,665.31
  4. Step 4: Simplify right side
    500,107.74x = 186,799,548,545.15
  5. Step 5: Solve for x
    x = 186,799,548,545.15/500,107.74
  6. Step 6: Final answer
    x = 373,518.61

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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.