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Finding the Third Proportional to 309,658.50 and 436,070.25

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Solution

The third proportional to 309,658.50 and 436,070.25 is: 614,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,658.50 : 436,070.25 = 436,070.25 : x
  2. Step 2: Convert to fraction form
    309,658.50/436,070.25 = 436,070.25/x
  3. Step 3: Cross multiply
    309,658.50x = 436,070.25 × 436,070.25
  4. Step 4: Simplify right side
    309,658.50x = 190,157,262,935.06
  5. Step 5: Solve for x
    x = 190,157,262,935.06/309,658.50
  6. Step 6: Final answer
    x = 614,087.01

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.