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Finding the Third Proportional to 191,666.25 and 420,238.13

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Solution

The third proportional to 191,666.25 and 420,238.13 is: 921,393.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,666.25 : 420,238.13 = 420,238.13 : x
  2. Step 2: Convert to fraction form
    191,666.25/420,238.13 = 420,238.13/x
  3. Step 3: Cross multiply
    191,666.25x = 420,238.13 × 420,238.13
  4. Step 4: Simplify right side
    191,666.25x = 176,600,081,703.52
  5. Step 5: Solve for x
    x = 176,600,081,703.52/191,666.25
  6. Step 6: Final answer
    x = 921,393.73

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.