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Finding the Fourth Proportional to 199,539.52, 275,466.12 and 154,115.53

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Solution

The fourth proportional to 199,539.52, 275,466.12 and 154,115.53 is: 212,757.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,539.52 : 275,466.12 = 154,115.53 : x
  2. Step 2: Convert to fraction form
    199,539.52/275,466.12 = 154,115.53/x
  3. Step 3: Cross multiply
    199,539.52x = 275,466.12 × 154,115.53
  4. Step 4: Simplify right side
    199,539.52x = 42,453,607,080.84
  5. Step 5: Solve for x
    x = 42,453,607,080.84/199,539.52
  6. Step 6: Final answer
    x = 212,757.89

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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.