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Finding the Third Proportional to 190,488.38 and 407,220.75

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Solution

The third proportional to 190,488.38 and 407,220.75 is: 870,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,488.38 : 407,220.75 = 407,220.75 : x
  2. Step 2: Convert to fraction form
    190,488.38/407,220.75 = 407,220.75/x
  3. Step 3: Cross multiply
    190,488.38x = 407,220.75 × 407,220.75
  4. Step 4: Simplify right side
    190,488.38x = 165,828,739,230.56
  5. Step 5: Solve for x
    x = 165,828,739,230.56/190,488.38
  6. Step 6: Final answer
    x = 870,545.19

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.