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Finding the Fourth Proportional to 351,403.80, 484,931.34 and 190,257.54

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Solution

The fourth proportional to 351,403.80, 484,931.34 and 190,257.54 is: 262,552.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,403.80 : 484,931.34 = 190,257.54 : x
  2. Step 2: Convert to fraction form
    351,403.80/484,931.34 = 190,257.54/x
  3. Step 3: Cross multiply
    351,403.80x = 484,931.34 × 190,257.54
  4. Step 4: Simplify right side
    351,403.80x = 92,261,843,817.30
  5. Step 5: Solve for x
    x = 92,261,843,817.30/351,403.80
  6. Step 6: Final answer
    x = 262,552.21

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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.