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Finding the Fourth Proportional to 275,165.53, 412,679.94 and 155,275.12

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Solution

The fourth proportional to 275,165.53, 412,679.94 and 155,275.12 is: 232,874.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,165.53 : 412,679.94 = 155,275.12 : x
  2. Step 2: Convert to fraction form
    275,165.53/412,679.94 = 155,275.12/x
  3. Step 3: Cross multiply
    275,165.53x = 412,679.94 × 155,275.12
  4. Step 4: Simplify right side
    275,165.53x = 64,078,927,205.09
  5. Step 5: Solve for x
    x = 64,078,927,205.09/275,165.53
  6. Step 6: Final answer
    x = 232,874.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.