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Finding the Third Proportional to 178,430 and 242,209

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Solution

The third proportional to 178,430 and 242,209 is: 328,785.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,430 : 242,209 = 242,209 : x
  2. Step 2: Convert to fraction form
    178,430/242,209 = 242,209/x
  3. Step 3: Cross multiply
    178,430x = 242,209 × 242,209
  4. Step 4: Simplify right side
    178,430x = 58,665,199,681
  5. Step 5: Solve for x
    x = 58,665,199,681/178,430
  6. Step 6: Final answer
    x = 328,785.52

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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.