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Finding the Third Proportional to 154,821 and 239,275.50

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Solution

The third proportional to 154,821 and 239,275.50 is: 369,799.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,821 : 239,275.50 = 239,275.50 : x
  2. Step 2: Convert to fraction form
    154,821/239,275.50 = 239,275.50/x
  3. Step 3: Cross multiply
    154,821x = 239,275.50 × 239,275.50
  4. Step 4: Simplify right side
    154,821x = 57,252,764,900.25
  5. Step 5: Solve for x
    x = 57,252,764,900.25/154,821
  6. Step 6: Final answer
    x = 369,799.74

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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.