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Finding the Fourth Proportional to 351,679.10, 485,316.50 and 190,538.16

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Solution

The fourth proportional to 351,679.10, 485,316.50 and 190,538.16 is: 262,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,679.10 : 485,316.50 = 190,538.16 : x
  2. Step 2: Convert to fraction form
    351,679.10/485,316.50 = 190,538.16/x
  3. Step 3: Cross multiply
    351,679.10x = 485,316.50 × 190,538.16
  4. Step 4: Simplify right side
    351,679.10x = 92,471,312,927.64
  5. Step 5: Solve for x
    x = 92,471,312,927.64/351,679.10
  6. Step 6: Final answer
    x = 262,942.30

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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.