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Finding the Third Proportional to 145,574 and 308,642

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Solution

The third proportional to 145,574 and 308,642 is: 654,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,574 : 308,642 = 308,642 : x
  2. Step 2: Convert to fraction form
    145,574/308,642 = 308,642/x
  3. Step 3: Cross multiply
    145,574x = 308,642 × 308,642
  4. Step 4: Simplify right side
    145,574x = 95,259,884,164
  5. Step 5: Solve for x
    x = 95,259,884,164/145,574
  6. Step 6: Final answer
    x = 654,374.30

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.