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Finding the Third Proportional to 145,539 and 313,210.50

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Solution

The third proportional to 145,539 and 313,210.50 is: 674,051.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,539 : 313,210.50 = 313,210.50 : x
  2. Step 2: Convert to fraction form
    145,539/313,210.50 = 313,210.50/x
  3. Step 3: Cross multiply
    145,539x = 313,210.50 × 313,210.50
  4. Step 4: Simplify right side
    145,539x = 98,100,817,310.25
  5. Step 5: Solve for x
    x = 98,100,817,310.25/145,539
  6. Step 6: Final answer
    x = 674,051.75

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.