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Finding the Fourth Proportional to 490,325.30, 676,612.53 and 275,501.15

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Solution

The fourth proportional to 490,325.30, 676,612.53 and 275,501.15 is: 380,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,325.30 : 676,612.53 = 275,501.15 : x
  2. Step 2: Convert to fraction form
    490,325.30/676,612.53 = 275,501.15/x
  3. Step 3: Cross multiply
    490,325.30x = 676,612.53 × 275,501.15
  4. Step 4: Simplify right side
    490,325.30x = 186,407,526,736.35
  5. Step 5: Solve for x
    x = 186,407,526,736.35/490,325.30
  6. Step 6: Final answer
    x = 380,171.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.