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Finding the Third Proportional to 149,492 and 318,364

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Solution

The third proportional to 149,492 and 318,364 is: 678,000.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,492 : 318,364 = 318,364 : x
  2. Step 2: Convert to fraction form
    149,492/318,364 = 318,364/x
  3. Step 3: Cross multiply
    149,492x = 318,364 × 318,364
  4. Step 4: Simplify right side
    149,492x = 101,355,636,496
  5. Step 5: Solve for x
    x = 101,355,636,496/149,492
  6. Step 6: Final answer
    x = 678,000.40

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.