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Finding the Fourth Proportional to 351,557.28, 485,147.88 and 190,411.92

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Solution

The fourth proportional to 351,557.28, 485,147.88 and 190,411.92 is: 262,767.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,557.28 : 485,147.88 = 190,411.92 : x
  2. Step 2: Convert to fraction form
    351,557.28/485,147.88 = 190,411.92/x
  3. Step 3: Cross multiply
    351,557.28x = 485,147.88 × 190,411.92
  4. Step 4: Simplify right side
    351,557.28x = 92,377,939,314.73
  5. Step 5: Solve for x
    x = 92,377,939,314.73/351,557.28
  6. Step 6: Final answer
    x = 262,767.82

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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.