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Finding the Third Proportional to 178,438 and 242,221

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Solution

The third proportional to 178,438 and 242,221 is: 328,803.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,438 : 242,221 = 242,221 : x
  2. Step 2: Convert to fraction form
    178,438/242,221 = 242,221/x
  3. Step 3: Cross multiply
    178,438x = 242,221 × 242,221
  4. Step 4: Simplify right side
    178,438x = 58,671,012,841
  5. Step 5: Solve for x
    x = 58,671,012,841/178,438
  6. Step 6: Final answer
    x = 328,803.35

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.