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Finding the Fourth Proportional to 345,555.25, 476,905.05 and 192,607.40

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Solution

The fourth proportional to 345,555.25, 476,905.05 and 192,607.40 is: 265,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,555.25 : 476,905.05 = 192,607.40 : x
  2. Step 2: Convert to fraction form
    345,555.25/476,905.05 = 192,607.40/x
  3. Step 3: Cross multiply
    345,555.25x = 476,905.05 × 192,607.40
  4. Step 4: Simplify right side
    345,555.25x = 91,855,442,919.63
  5. Step 5: Solve for x
    x = 91,855,442,919.63/345,555.25
  6. Step 6: Final answer
    x = 265,819.85

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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.