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Finding the Fourth Proportional to 351,528.84, 485,109.65 and 190,383.89

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Solution

The fourth proportional to 351,528.84, 485,109.65 and 190,383.89 is: 262,729.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,528.84 : 485,109.65 = 190,383.89 : x
  2. Step 2: Convert to fraction form
    351,528.84/485,109.65 = 190,383.89/x
  3. Step 3: Cross multiply
    351,528.84x = 485,109.65 × 190,383.89
  4. Step 4: Simplify right side
    351,528.84x = 92,357,061,898.01
  5. Step 5: Solve for x
    x = 92,357,061,898.01/351,528.84
  6. Step 6: Final answer
    x = 262,729.69

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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.