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Finding the Fourth Proportional to 351,543.64, 485,127.78 and 190,395

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Solution

The fourth proportional to 351,543.64, 485,127.78 and 190,395 is: 262,743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,543.64 : 485,127.78 = 190,395 : x
  2. Step 2: Convert to fraction form
    351,543.64/485,127.78 = 190,395/x
  3. Step 3: Cross multiply
    351,543.64x = 485,127.78 × 190,395
  4. Step 4: Simplify right side
    351,543.64x = 92,365,903,673.10
  5. Step 5: Solve for x
    x = 92,365,903,673.10/351,543.64
  6. Step 6: Final answer
    x = 262,743.78

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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.