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Finding the Fourth Proportional to 351,470.76, 485,028.78 and 190,325.81

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Solution

The fourth proportional to 351,470.76, 485,028.78 and 190,325.81 is: 262,649.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,470.76 : 485,028.78 = 190,325.81 : x
  2. Step 2: Convert to fraction form
    351,470.76/485,028.78 = 190,325.81/x
  3. Step 3: Cross multiply
    351,470.76x = 485,028.78 × 190,325.81
  4. Step 4: Simplify right side
    351,470.76x = 92,313,494,475.18
  5. Step 5: Solve for x
    x = 92,313,494,475.18/351,470.76
  6. Step 6: Final answer
    x = 262,649.14

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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.