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Finding the Fourth Proportional to 351,534.63, 485,115.38 and 190,386

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Solution

The fourth proportional to 351,534.63, 485,115.38 and 190,386 is: 262,731.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,534.63 : 485,115.38 = 190,386 : x
  2. Step 2: Convert to fraction form
    351,534.63/485,115.38 = 190,386/x
  3. Step 3: Cross multiply
    351,534.63x = 485,115.38 × 190,386
  4. Step 4: Simplify right side
    351,534.63x = 92,359,176,736.68
  5. Step 5: Solve for x
    x = 92,359,176,736.68/351,534.63
  6. Step 6: Final answer
    x = 262,731.38

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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.