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Finding the Third Proportional to 179,440 and 278,628

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Solution

The third proportional to 179,440 and 278,628 is: 432,643.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,440 : 278,628 = 278,628 : x
  2. Step 2: Convert to fraction form
    179,440/278,628 = 278,628/x
  3. Step 3: Cross multiply
    179,440x = 278,628 × 278,628
  4. Step 4: Simplify right side
    179,440x = 77,633,562,384
  5. Step 5: Solve for x
    x = 77,633,562,384/179,440
  6. Step 6: Final answer
    x = 432,643.57

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.