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Finding the Third Proportional to 245,620 and 538,000

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Solution

The third proportional to 245,620 and 538,000 is: 1,178,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,620 : 538,000 = 538,000 : x
  2. Step 2: Convert to fraction form
    245,620/538,000 = 538,000/x
  3. Step 3: Cross multiply
    245,620x = 538,000 × 538,000
  4. Step 4: Simplify right side
    245,620x = 289,444,000,000
  5. Step 5: Solve for x
    x = 289,444,000,000/245,620
  6. Step 6: Final answer
    x = 1,178,421.95

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.