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Finding the Fourth Proportional to 275,071.98, 379,599.08 and 154,213.30

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Solution

The fourth proportional to 275,071.98, 379,599.08 and 154,213.30 is: 212,814.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,071.98 : 379,599.08 = 154,213.30 : x
  2. Step 2: Convert to fraction form
    275,071.98/379,599.08 = 154,213.30/x
  3. Step 3: Cross multiply
    275,071.98x = 379,599.08 × 154,213.30
  4. Step 4: Simplify right side
    275,071.98x = 58,539,226,507.20
  5. Step 5: Solve for x
    x = 58,539,226,507.20/275,071.98
  6. Step 6: Final answer
    x = 212,814.21

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1.5x scale

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.