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Finding the Fourth Proportional to 351,505.60, 485,075.30 and 190,356.96

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Solution

The fourth proportional to 351,505.60, 485,075.30 and 190,356.96 is: 262,691.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,505.60 : 485,075.30 = 190,356.96 : x
  2. Step 2: Convert to fraction form
    351,505.60/485,075.30 = 190,356.96/x
  3. Step 3: Cross multiply
    351,505.60x = 485,075.30 × 190,356.96
  4. Step 4: Simplify right side
    351,505.60x = 92,337,459,479.09
  5. Step 5: Solve for x
    x = 92,337,459,479.09/351,505.60
  6. Step 6: Final answer
    x = 262,691.29

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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.