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Finding the Fourth Proportional to 500,257.64, 690,354.80 and 270,813.80

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Solution

The fourth proportional to 500,257.64, 690,354.80 and 270,813.80 is: 373,722.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,257.64 : 690,354.80 = 270,813.80 : x
  2. Step 2: Convert to fraction form
    500,257.64/690,354.80 = 270,813.80/x
  3. Step 3: Cross multiply
    500,257.64x = 690,354.80 × 270,813.80
  4. Step 4: Simplify right side
    500,257.64x = 186,957,606,736.24
  5. Step 5: Solve for x
    x = 186,957,606,736.24/500,257.64
  6. Step 6: Final answer
    x = 373,722.64

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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.