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Finding the Fourth Proportional to 500,221.34, 690,305.81 and 270,777.90

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Solution

The fourth proportional to 500,221.34, 690,305.81 and 270,777.90 is: 373,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,221.34 : 690,305.81 = 270,777.90 : x
  2. Step 2: Convert to fraction form
    500,221.34/690,305.81 = 270,777.90/x
  3. Step 3: Cross multiply
    500,221.34x = 690,305.81 × 270,777.90
  4. Step 4: Simplify right side
    500,221.34x = 186,919,556,235.71
  5. Step 5: Solve for x
    x = 186,919,556,235.71/500,221.34
  6. Step 6: Final answer
    x = 373,673.70

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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.