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Finding the Third Proportional to 208,490 and 455,218

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Solution

The third proportional to 208,490 and 455,218 is: 993,925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,490 : 455,218 = 455,218 : x
  2. Step 2: Convert to fraction form
    208,490/455,218 = 455,218/x
  3. Step 3: Cross multiply
    208,490x = 455,218 × 455,218
  4. Step 4: Simplify right side
    208,490x = 207,223,427,524
  5. Step 5: Solve for x
    x = 207,223,427,524/208,490
  6. Step 6: Final answer
    x = 993,925.02

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.