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Finding the Third Proportional to 175,417.05 and 378,830.47

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Solution

The third proportional to 175,417.05 and 378,830.47 is: 818,121.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,417.05 : 378,830.47 = 378,830.47 : x
  2. Step 2: Convert to fraction form
    175,417.05/378,830.47 = 378,830.47/x
  3. Step 3: Cross multiply
    175,417.05x = 378,830.47 × 378,830.47
  4. Step 4: Simplify right side
    175,417.05x = 143,512,528,122.83
  5. Step 5: Solve for x
    x = 143,512,528,122.83/175,417.05
  6. Step 6: Final answer
    x = 818,121.89

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.