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Finding the Third Proportional to 180,130 and 278,942

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Solution

The third proportional to 180,130 and 278,942 is: 431,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,130 : 278,942 = 278,942 : x
  2. Step 2: Convert to fraction form
    180,130/278,942 = 278,942/x
  3. Step 3: Cross multiply
    180,130x = 278,942 × 278,942
  4. Step 4: Simplify right side
    180,130x = 77,808,639,364
  5. Step 5: Solve for x
    x = 77,808,639,364/180,130
  6. Step 6: Final answer
    x = 431,958.25

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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.