Home / 500,105.56-690,144.32-270,663.30

Finding the Fourth Proportional to 500,105.56, 690,144.32 and 270,663.30

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Solution

The fourth proportional to 500,105.56, 690,144.32 and 270,663.30 is: 373,514.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,105.56 : 690,144.32 = 270,663.30 : x
  2. Step 2: Convert to fraction form
    500,105.56/690,144.32 = 270,663.30/x
  3. Step 3: Cross multiply
    500,105.56x = 690,144.32 × 270,663.30
  4. Step 4: Simplify right side
    500,105.56x = 186,796,739,127.46
  5. Step 5: Solve for x
    x = 186,796,739,127.46/500,105.56
  6. Step 6: Final answer
    x = 373,514.62

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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.