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Finding the Fourth Proportional to 351,679.71, 485,318.48 and 190,534.76

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Solution

The fourth proportional to 351,679.71, 485,318.48 and 190,534.76 is: 262,938.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,679.71 : 485,318.48 = 190,534.76 : x
  2. Step 2: Convert to fraction form
    351,679.71/485,318.48 = 190,534.76/x
  3. Step 3: Cross multiply
    351,679.71x = 485,318.48 × 190,534.76
  4. Step 4: Simplify right side
    351,679.71x = 92,470,036,731.10
  5. Step 5: Solve for x
    x = 92,470,036,731.10/351,679.71
  6. Step 6: Final answer
    x = 262,938.22

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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.