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Finding the Fourth Proportional to 500,353.08, 690,478.96 and 270,908.56

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Solution

The fourth proportional to 500,353.08, 690,478.96 and 270,908.56 is: 373,849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,353.08 : 690,478.96 = 270,908.56 : x
  2. Step 2: Convert to fraction form
    500,353.08/690,478.96 = 270,908.56/x
  3. Step 3: Cross multiply
    500,353.08x = 690,478.96 × 270,908.56
  4. Step 4: Simplify right side
    500,353.08x = 187,056,660,763.90
  5. Step 5: Solve for x
    x = 187,056,660,763.90/500,353.08
  6. Step 6: Final answer
    x = 373,849.32

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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.