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Finding the Third Proportional to 261,830.25 and 400,354

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Solution

The third proportional to 261,830.25 and 400,354 is: 612,165.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,830.25 : 400,354 = 400,354 : x
  2. Step 2: Convert to fraction form
    261,830.25/400,354 = 400,354/x
  3. Step 3: Cross multiply
    261,830.25x = 400,354 × 400,354
  4. Step 4: Simplify right side
    261,830.25x = 160,283,325,316
  5. Step 5: Solve for x
    x = 160,283,325,316/261,830.25
  6. Step 6: Final answer
    x = 612,165.04

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.