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Finding the Fourth Proportional to 403,351.10, 605,026.65 and 270,640.70

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Solution

The fourth proportional to 403,351.10, 605,026.65 and 270,640.70 is: 405,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,351.10 : 605,026.65 = 270,640.70 : x
  2. Step 2: Convert to fraction form
    403,351.10/605,026.65 = 270,640.70/x
  3. Step 3: Cross multiply
    403,351.10x = 605,026.65 × 270,640.70
  4. Step 4: Simplify right side
    403,351.10x = 163,744,836,074.66
  5. Step 5: Solve for x
    x = 163,744,836,074.66/403,351.10
  6. Step 6: Final answer
    x = 405,961.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.