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Finding the Fourth Proportional to 500,147.64, 690,203.69 and 270,704.88

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Solution

The fourth proportional to 500,147.64, 690,203.69 and 270,704.88 is: 373,572.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,147.64 : 690,203.69 = 270,704.88 : x
  2. Step 2: Convert to fraction form
    500,147.64/690,203.69 = 270,704.88/x
  3. Step 3: Cross multiply
    500,147.64x = 690,203.69 × 270,704.88
  4. Step 4: Simplify right side
    500,147.64x = 186,841,505,723.48
  5. Step 5: Solve for x
    x = 186,841,505,723.48/500,147.64
  6. Step 6: Final answer
    x = 373,572.70

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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.